Attribution & Transparency

Image Credits

Full attribution for all images used in my social media posts.

Achilles Tendon Xanthomas

4 images
Appuhamy et al.

Appuhamy AMRDK, et al. Familial Hypercholesterolemia Presenting as Bilateral Achilles Tendon Xanthomas and Corneal Arcus in a Young Sri Lankan Male. Case Rep Med. 2021;2021:1932763.

License
CC BY 4.0
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None
Oliva et al.

Oliva F, et al. Achilles tendon xanthomas in familial hypercholesterolemia: a systematic review. J Orthop Surg Res. 2023;18:575.

License
CC BY 4.0
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None
Alnouri et al.

Alnouri M, et al. Familial Hypercholesterolemia in Saudi Arabia. Glob Heart. 2020;15(1):59.

License
CC BY 4.0
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Cropped
Köroğlu et al.

Köroğlu OA, et al. Homozygous familial hypercholesterolemia in a child with novel LDL receptor mutation. Orphanet J Rare Dis. 2024;19:109.

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CC BY 4.0
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None

Adult-onset Macroglossia

4 images
Deshpande et al.

Deshpande P, et al. Primary Systemic Amyloidosis Presenting as Macroglossia. Case Rep Med. 2015;2015:670369.

License
CC BY 3.0
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None
Chebil et al.

Chebil A, et al. Macroglossia as the presenting feature of systemic AL amyloidosis. PMC. 2024;PMC11871883.

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CC BY 4.0
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None
Tao et al.

Tao L, et al. Macroglossia as the initial manifestation of primary amyloidosis. Braz J Otorhinolaryngol. 2023;89(6):101286.

License
CC BY 4.0
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None
Shiratori et al.

Shiratori K, et al. Macroglossia as a manifestation of systemic AL amyloidosis. J Intensive Care. 2024;12:686.

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CC BY 4.0
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None

Amoebic Erythrophagocytosis

4 images
CDC / Dr. Mae Melvin; Dr. Greene

CDC Public Health Image Library #14544. 1966. Dr. Mae Melvin; Dr. Greene.

License
Public Domain
Modifications
None
Villegas-Gómez et al.

Villegas-Gómez I, et al. Entamoeba histolytica: Pathogenesis and Virulence Mechanisms. Front Cell Infect Microbiol. 2021;11:693449.

License
CC BY 4.0
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Cropped
CDC / Dr. Irving G. Kagan

CDC Public Health Image Library #27274. Dr. Irving G. Kagan.

License
Public Domain
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None
CDC / Dr. Green

CDC Public Health Image Library #28678. 1967. Dr. Green.

License
Public Domain
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None

Aschoff Bodies

4 images
Wikipedia user Nephron (Michael Bonert, MD)

Bonert M. Rheumatic heart disease histology. Wikimedia Commons. 2012.

Modifications
None
Viera et al.

Viera N, et al. Rheumatic Heart Disease: A Review. Diagnostics. 2023;13(20):3252.

License
CC BY 4.0
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None
Uthman

Uthman E. Aschoff Body in Rheumatic Myocarditis. Wikimedia Commons. 2007.

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None
Willaert et al.

Willaert R, et al. Acute Rheumatic Fever in an Adult: A Case Report. Cureus. 2023;15(10):e47226.

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CC BY 4.0
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None

Bamboo Spine

4 images
Mereyem et al.

Mereyem A, et al. Bamboo Spine: A Rare Complication of Ankylosing Spondylitis. Int J Case Rep Images. 2020;11:101109Z01EM2020.

License
CC BY 4.0
Modifications
Arrows removed
Baig et al.

Baig MN, et al. Ankylosing Spondylitis Presenting as Bamboo Spine. Cureus. 2018;10(3):e2456.

License
CC BY 3.0
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None
Beaven et al.

Beaven A, et al. Bamboo spine in ankylosing spondylitis. Orthop Rheumatol Open Access J. 2019;14(1):555879.

License
CC BY 4.0
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None
Md Yusoff et al.

Md Yusoff MF, et al. Simultaneous Cervical and Lumbar Vertebral Fracture-Dislocation in an Ankylosing Spondylitis Patient. Cureus. 2025.

License
CC BY 4.0
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None

Battle's Sign

3 images
Piña and Villasana

Piña-Garza JE, Villasana-Salazar A. Battle's sign in basilar skull fracture. Rev Mex Neuroci. 2013;14(3).

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None
Cousins

Cousins VC. Surgery for Temporal Bone Trauma. In: Atlas of Otolaryngology Head and Neck Operative Surgery. LibreTexts Medicine. 2023.

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None
Wikipedia user Tinss

Tinss. Battle's sign photograph. Wikimedia Commons. 2023.

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None

Bilateral Anterior Lenticonus

4 images
Halawani et al.

Halawani MA, et al. Bilateral Anterior Lenticonus in Alport Syndrome. Cureus. 2021;13(2):e12970.

License
CC BY 4.0
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None
Jinagal et al.

Jinagal J, et al. Bilateral anterior lenticonus in Alport syndrome. Indian J Ophthalmol. 2018;66(9):1349–1350.

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None
Sedaghat et al.

Sedaghat A, et al. Alport syndrome with anterior lenticonus. Medicine (Baltimore). 2019;98(41):e17054.

License
CC BY 4.0
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None
Sargazi et al.

Sargazi N, et al. Alport Syndrome Presenting with Anterior Lenticonus. Cureus. 2023;15(10):e47373.

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CC BY 4.0
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None

Bird's Beak Sign

4 images
Chapagain et al.

Chapagain S, et al. Bird's beak sign in achalasia cardia. JNMA J Nepal Med Assoc. 2024;62(270):e8649.

License
CC BY 4.0
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None
Xiao and Pandolfino

Xiao Y, Pandolfino JE. Achalasia: pathophysiology and diagnosis. J Xiangya Med. 2019;4:5080.

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None
Bhamrah et al.

Bhamrah G, et al. Achalasia presenting with bird's beak sign. Cureus. 2020;12(3):e7379.

License
CC BY 4.0
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None
Gupta et al.

Gupta P, et al. Achalasia cardia: a review. Indian J Radiol Imaging. 2015;25(3):299–307.

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None

Bucket-handle Fracture

3 images
Colleran et al.

Colleran G, et al. Bucket-handle fractures in child abuse. Eur Radiol. 2025;35:1234–1242.

License
CC BY 4.0
Modifications
Cropped
Offiah et al.

Offiah AC, et al. Radiological appearances of fractures in non-accidental injury. Pediatr Radiol. 2009;39(Suppl 2):S227–S233.

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None
Wu et al.

Wu J, et al. Classic metaphyseal lesions in non-accidental trauma. Radiol Adv. 2025;2:umae018.

License
CC BY 4.0
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None

Burrows

3 images
Scanni

Scanni G. Scabies burrows: dermoscopic features. PMC. 2019;PMC6473440.

License
CC BY 4.0
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None
Nie et al.

Nie X, et al. Scabies: clinical features and management. Front Med. 2023;10:1097999.

License
CC BY 4.0
Modifications
Cropped
Wikipedia user Michael Geary

Geary M. Scabies burrow photograph. Wikimedia Commons. 2006.

License
Public Domain
Modifications
None

Burton's Line

4 images
Karami et al.

Karami M, et al. Burton's line on the gum seen in lead poisoning among petroleum refinery workers in Kirkuk City, Iraq: a case series. Cureus. 2024.

License
CC BY 4.0
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None
Yang et al. (fig. 1)

Yang X, et al. Lead poisoning presenting with Burton's line. BMC Gastroenterol. 2020;20:348.

License
CC BY 4.0
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None
Yang et al. (fig. 2)

Yang X, et al. Lead poisoning presenting with Burton's line. BMC Gastroenterol. 2020;20:348.

License
CC BY 4.0
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None
Banagozar Mohammadi et al.

Banagozar Mohammadi A, et al. Burton's line: a rare finding in lead poisoning. Clin Case Rep. 2021;9(6):e04101.

License
CC BY 4.0
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None

Café au Lait Spots

4 images
Horn et al.

Horn D, et al. Café-au-lait spots in neurofibromatosis type 1. Eur J Med Genet. 2024.

License
CC BY 4.0
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Cropped
Fale et al.

Fale A, et al. Café-au-lait macules: a diagnostic clue. Nepal J Dermatol Venereol Leprol. 2025;23(2).

License
CC BY 4.0
Modifications
Cropped
McLarney et al.

McLarney M, et al. Café-au-lait macules in a patient with NF1. JAAD Case Rep. 2022;28:25–27.

License
CC BY 4.0
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None
Hasanain et al.

Hasanain M, et al. Neurofibromatosis type 1 with café-au-lait spots. Cureus. 2023;15(8):e42581.

License
CC BY 3.0
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None

Call–Exner Bodies

4 images
Suzuki et al.

Suzuki T, et al. Granulosa cell tumor with Call–Exner bodies. J Ovarian Res. 2023;16:38.

License
CC BY 4.0
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None
Koganezawa et al.

Koganezawa I, et al. Adult granulosa cell tumor of the ovary. Surg Case Rep. 2020;6:80.

License
CC BY 4.0
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None
Sumitra et al. (fig. 1)

Sumitra S, et al. Granulosa cell tumor: a clinicopathological study. J Pathol Transl Med. 2015;49(1):70–75.

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None
Sumitra et al. (fig. 2)

Sumitra S, et al. Granulosa cell tumor: a clinicopathological study. J Pathol Transl Med. 2015;49(1):70–75.

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None

Casal's Necklace

4 images
CDC

CDC Public Health Image Library #3757. Casal's necklace in pellagra. 1970.

License
Public Domain
Modifications
None
Bhat

Bhat RM. A case of classical Casal's necklace in a 12-year-old boy. Image J. 2014.

License
CC BY 4.0
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None
Isaacs and Lehloenya

Isaacs M, Lehloenya RJ. Pellagra presenting with Casal's necklace. Front Allergy. 2023;4:1159387.

License
CC BY 4.0
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None
Ryali et al.

Ryali B, et al. Steroid-resistant rash with neuropsychiatric deterioration and weight loss: a modern-day case of pellagra. Cureus. 2025.

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CC BY 4.0
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None

Choroid Tubercle

4 images
Attiku and Rishi

Attiku Y, Rishi P. Miliary tuberculosis presenting as bilateral pseudo-retinoblastoma. GMS Ophthalmol Cases. 2021;11:Doc12.

License
CC BY 4.0
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None
Annamalai et al.

Annamalai R, Biswas J. Bilateral choroidal tuberculoma in miliary tuberculosis — report of a case. J Ophthal Inflamm Infect. 2015;5:4.

License
CC BY 4.0
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None
Jain et al.

Jain T, et al. Bilateral choroidal tuberculoma in a patient of miliary tuberculosis. J Ophthal Inflamm Infect. 2025;15:77.

License
CC BY 4.0
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None
Lekha and Karthikeyan

Lekha T, Karthikeyan R. Multimodal imaging of choroidal tubercles. Indian J Ophthalmol. 2018;66(7):995–996.

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None

Christmas Tree Rash

3 images
Oya et al.

Oya AS, et al. Pityriasis rosea with Christmas tree distribution. Cureus. 2024;16(1):e52052.

License
CC BY 4.0
Modifications
Cropped
James Hellerman, MD

Hellerman J. Pityriasis rosea photograph. Wikimedia Commons. 2011.

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None
Ashayer et al.

Ashayer A, et al. Pityriasis rosea: a review of the clinical features. Indian Dermatol Online J. 2018;9(1):13–18.

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None

Colpitis Macularis (Strawberry Cervix)

3 images
Bicha and Arefeayinie

Bicha WA, Arefeayinie A. Colpitis macularis (strawberry cervix) in trichomoniasis. Gynecol Obstet Open Access. 2023;4:046.

License
CC BY 4.0
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None
Gashi

Gashi V. Strawberry cervix in vaginal trichomoniasis. Health J Clin Res. 2017;1:001.

License
CC BY 4.0
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None
Mishra et al.

Mishra S, et al. Colpitis macularis in trichomoniasis. Indian J Sex Transm Dis AIDS. 2024;45(1).

Modifications
Cropped

Corkscrew Hairs with Perifollicular Hemorrhaging

4 images
Shah et al.

Shah A, et al. Scurvy presenting with corkscrew hairs and perifollicular hemorrhage. Case Rep Med. 2021;2021:5519937.

License
CC BY 4.0
Modifications
None
Souza et al.

Souza FHC, et al. Scurvy: corkscrew hairs and perifollicular hemorrhage. An Bras Dermatol. 2021;96(1):112–114.

License
CC BY 4.0
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None
Du et al.

Du Y, et al. Scurvy in an adult presenting with corkscrew hairs. Cureus. 2024;16(4):e58782.

License
CC BY 4.0
Modifications
None
Abe-Ridgeway and Leach

Abe-Ridgeway A, Leach S. Scurvy with corkscrew hairs and perifollicular hemorrhage. Clin Exp Dermatol Ther. 2025.

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None

Crowe's Sign (Axillary Freckling)

4 images
Ozarslan et al.

Ozarslan B, et al. Cutaneous manifestations of neurofibromatosis type 1. Cancers. 2021;13(3):463.

License
CC BY 4.0
Modifications
None
Serra et al.

Serra E, et al. Axillary freckling in neurofibromatosis type 1. Ital J Pediatr. 2019;45:71.

License
CC BY 4.0
Modifications
Cropped
Cohen

Cohen PR. Crowe's sign in neurofibromatosis type 1. Cureus. 2021;13(3):e14258.

License
CC BY 4.0
Modifications
Cropped
DermNetNZ

DermNetNZ. Axillary freckling in neurofibromatosis. DermNetNZ Image Library. 2020.

Modifications
None

Dendritic Keratitis

5 images
Yokogawa et al.

Yokogawa H, et al. Dendritic keratitis in herpes simplex virus infection. Clin Ophthalmol. 2015;9:1575–1580.

Modifications
None
Greenan et al.

Greenan E, et al. Herpes simplex keratitis: pathogenesis and management. Viruses. 2021;13(9):1856.

License
CC BY 4.0
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None
Welder et al.

Welder JD, et al. Herpes simplex virus dendritic keratitis. EyeRounds.org. 2012.

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None
Zhu et al.

Zhu L, Zhu H. Ocular herpes: the pathophysiology, management and treatment of herpetic eye diseases. Virol Sin. 2014;29(6):327–342.

License
CC BY 4.0
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None
Ying et al.

Ying L, et al. Human herpesvirus 7 epithelial keratitis with geographic-dendritic ulceration. BMC Infect Dis. 2025;26(1):149.

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None

Dermatitis Herpetiformis

4 images
Antiga et al. (fig. 1)

Antiga E, et al. Dermatitis herpetiformis: novel perspectives. Front Immunol. 2019;10:1290.

License
CC BY 4.0
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None
Reunala et al. (fig. 1)

Reunala T, et al. Dermatitis herpetiformis: pathognomonic transglutaminase IgA deposits. Am J Clin Dermatol. 2021;22(3):329–338.

Modifications
None
Reunala et al. (fig. 2)

Reunala T, et al. Dermatitis herpetiformis: pathognomonic transglutaminase IgA deposits. Am J Clin Dermatol. 2021;22(3):329–338.

Modifications
None
Antiga et al. (fig. 2)

Antiga E, et al. Dermatitis herpetiformis: novel perspectives. Front Immunol. 2019;10:1290.

License
CC BY 4.0
Modifications
None

Donovan Bodies

4 images
CDC / Susan Lindsey

CDC Public Health Image Library #18899. 1978. Susan Lindsey.

License
Public Domain
Modifications
None
Belda

Belda W Jr. Donovanosis. An Bras Dermatol. 2020;95(6):675–683.

License
CC BY 4.0
Modifications
Cropped and upscaled
Hajare et al.

Hajare SS, et al. Donovan bodies in granuloma inguinale. J Clin Diagn Res. 2019;13(4):ED01–ED02.

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None
Balakrishnan and Vijayan

Balakrishnan S, Vijayan S. Donovan bodies in granuloma inguinale. World J Womens Child Health. 2023.

Modifications
Arrows removed

Electrical Alternans

5 images
Aldridge et al.

Aldridge J, et al. Electrical alternans in cardiac tamponade. Cureus. 2024;16(3):e54677.

License
CC BY 4.0
Modifications
Cropped
Rosser et al.

Rosser B, et al. Electrical alternans in pericardial effusion. Eur Heart J Case Rep. 2025;9:ytaf055.

License
CC BY 4.0
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None
Harahap et al.

Harahap IA, et al. Electrical alternans in cardiac tamponade. IOP Conf Ser Earth Environ Sci. 2018;125:012120.

License
CC BY 3.0
Modifications
None
James Hellerman, MD

Hellerman J. Electrical alternans ECG. Wikimedia Commons. 2011.

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None
Miravent et al.

Miravent S, Ruiz JM, Molina NB, et al. Prehospital Detection of a Large Pericardial Effusion Using Screening Sonography: A Case Report. Cureus. 2025;17(12):e98471.

License
CC BY 4.0
Modifications
Cropped

Erythema Migrans

7 images
Schotthoefer et al. (fig. 1)

Schotthoefer AM, et al. Clinical presentations of Lyme disease. Cureus. 2022;14(11):e30673.

License
CC BY 4.0
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None
Schotthoefer et al. (fig. 2)

Schotthoefer AM, et al. Clinical presentations of Lyme disease. Cureus. 2022;14(11):e30673.

License
CC BY 4.0
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None
Schotthoefer et al. (fig. 3)

Schotthoefer AM, et al. Clinical presentations of Lyme disease. Cureus. 2022;14(11):e30673.

License
CC BY 4.0
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None
CDC / James Gathany

CDC Public Health Image Library #9875. 2007. James Gathany.

License
Public Domain
Modifications
None
Lauren Bishop

CDC Public Health Image Library #28369. 2023. Lauren Bishop.

License
Public Domain
Modifications
None
Marques et al.

Marques AR, Strle F, Wormser GP. Comparison of Lyme disease in the United States and Europe. Emerg Infect Dis. 2021;27(8):2017.

License
Public Domain
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None
Yasunori Koide

Koide Y. Amblyomma tick photograph. Wikimedia Commons. 2017.

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None

Figure 3 Sign

5 images
Bishal et al.

Bishal KC, et al. Coarctation of aorta in a young female with extensive collaterals presenting with secondary hypertension. Nepalese Heart J. 2022;19(2):55–58.

License
CC BY 4.0
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None
Henzel and Schwerzmann

Henzel AW, Schwerzmann M. Figure of 3-sign: a case report. Eur Heart J Case Rep. 2018;3(1):yty162.

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None
Agasthi et al.

Agasthi P, et al. Management of adults with coarctation of aorta. World J Cardiol. 2020;12(5):167–191.

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None
Gutierrez et al.

Gutiérrez Rangel V, et al. Hypertension Secondary to Severe Aortic Coarctation in an Adult Patient. Cureus. 2025;17(6):e86128.

License
CC BY 4.0
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None
Thodi Ramamurthy et al.

Thodi Ramamurthy M, Balakrishnan VK, David SAN, Korrapati HS. Congenital kinking of aorta. BMJ Case Rep. 2017;2017:bcr2017220896.

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None

Giant Cytoplasmic Granules

4 images
Gopaal et al.

Gopaal N, Sharma JN, Agrawal V, Lora SS, Jadoun LS. Chediak-Higashi Syndrome With Epstein-Barr Virus Triggered Hemophagocytic Lymphohistiocytosis: A Case Report. Cureus. 2020 Nov 13;12(11):e11467. doi: 10.7759/cureus.11467. PMID: 33329964; PMCID: PMC7733776.

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CC BY 4.0
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None
Rajyalakshmi and Kusa Raju (fig. 1)

Rajyalakshmi R, Kusa Raju P. Role of Morphology in the Diagnosis of an Unsuspected Case of Chediak-Higashi Syndrome: A Case Report. Cureus. 2024 Dec 4;16(12):e75128. doi: 10.7759/cureus.75128. PMID: 39759654; PMCID: PMC11700029.

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CC BY 4.0
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None
Rajyalakshmi and Kusa Raju (fig. 2)

Rajyalakshmi R, Kusa Raju P. Role of Morphology in the Diagnosis of an Unsuspected Case of Chediak-Higashi Syndrome: A Case Report. Cureus. 2024 Dec 4;16(12):e75128. doi: 10.7759/cureus.75128. PMID: 39759654; PMCID: PMC11700029.

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CC BY 4.0
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None
Varón et al.

Varón CR, Suárez-Gómez SA, Varón D, Gómez Flórez L, Cortes-Urrea C, Vélez Colmenares EG and Corona I (2026) Case Report: A converging pathology: Chediak–Higashi syndrome and IEI-associated lymphoproliferative disease. Front. Hematol. 4:1650494. doi: 10.3389/frhem.2025.1650494

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CC BY 4.0
Modifications
Cropped

Gottron's Papules

4 images
Castro et al.

Castro L, Valdebran M, Meléndez KG, Cristales J, Cerritos LE. Dermoscopy of nailfold capillaries and Gottron's papules in a 15-year-old patient. JAAD Case Rep. 2025 Feb 27;59:26-27. doi: 10.1016/j.jdcr.2024.12.038. PMID: 40225086; PMCID: PMC11992395.

License
CC BY 4.0
Modifications
Cropped
Habibullah et al.

Habibullah T, Habibullah A, Simsim R. Skin Manifestations of Rheumatological Diseases. 2021 Jan 6. In: Almoallim H, Cheikh M, editors. Skills in Rheumatology [Internet]. Singapore: Springer; 2021. Fig. 15.12, [Gottron's papules. Flat-topped papules over...]. Available from: https://www.ncbi.nlm.nih.gov/books/NBK585749/figure/ch15.Fig12/ doi: 10.1007/978-981-15-8323-0_15

License
CC BY 4.0
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None
Lim et al.

Lim JL, Yusof NS, Md Tarekh NA, Abdul Rahman R. Dermatomyositis Anteceding Lung Adenocarcinoma. Cureus. 2020 Nov 19;12(11):e11580. doi: 10.7759/cureus.11580. PMID: 33364104; PMCID: PMC7749829.

License
CC BY 4.0
Modifications
Cropped
Broad et al.

Broad EO. Rapid Progression of Dermatomyositis in an Elderly Patient With Oropharyngeal and Pulmonary Involvement: A Case Report. Cureus. 2025 May 17;17(5):e84267. doi: 10.7759/cureus.84267. PMID: 40525043; PMCID: PMC12168830.

License
CC BY 4.0
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None

Granulation Tissue in the External Auditory Canal

2 images
Raman et al.

Raman NC, Sreedharan T, Varkey AP. Clinical Profile of Patients with Malignant Otitis Externa in a Tertiary Care Centre. Journal of Evidence Based Medicine and Healthcare. 2020;7:3022-3026. doi: 10.18410/jebmh/2020/617.

License
CC BY 4.0
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None
Rout et al.

Rout MR, Krishna Prakash SS, Laxmi PSVS, Arshad. A clinical study on malignant otitis externa. IOSR J Dent Med Sci. 2021 Aug;20(8 Ser. 3):51-56. doi:10.9790/0853-2008035156.

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None

Granulomatosis Infantiseptica

2 images
Kim et al. (fig. 1)

Kim YK, Jin JH, Kim YJ, Yoon SW, Lee SH. Neonatal Listeriosis with Granulomatosis Infantiseptica: A Case Report. Perinatology. 2023 Sep;34(3):135-139. https://doi.org/10.14734/PN.2023.34.3.135

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None
Kim et al. (fig. 2)

Kim YK, Jin JH, Kim YJ, Yoon SW, Lee SH. Neonatal Listeriosis with Granulomatosis Infantiseptica: A Case Report. Perinatology. 2023 Sep;34(3):135-139. https://doi.org/10.14734/PN.2023.34.3.135

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None

Heliotrope Rash

4 images
Al-Janobi et al.

Al-Janobi G, Alkhalidi H, Omair MA. Unilateral heliotrope rash in juvenile dermatomyositis: an unusual presentation of an underlying serious disease. Case Rep Rheumatol. 2014;2014:979856. doi: 10.1155/2014/979856. Epub 2014 Dec 22. PMID: 25587479; PMCID: PMC4283393.

License
CC BY 3.0
Modifications
Cropped
Sanz-Correa et al.

Sanz-Correa J, Cobo-Ibáñez T, Prats Caelles I. Cutaneous manifestations in idiopathic inflammatory myopathies. J IM. 2022;2(3):76-86. doi:10.24875/JIMIDS.M22000020.

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None
Saleh and Saleh

Saleh ZF, Saleh Z. Anti-NXP2 antibody positive dermatomyositis presenting as unilateral heliotrope rash. JAAD Case Rep. 2024 May 18;50:25-29. doi: 10.1016/j.jdcr.2024.05.015. PMID: 39036619; PMCID: PMC11259984.

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None
Dugan et al.

Dugan EM, Huber AM, Miller FW, Rider LG. Photoessay of the cutaneous manifestations of the idiopathic inflammatory myopathies. Dermatology online journal. 2009 Feb 1;15(2).

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None

Hepatic Daughter Cysts

4 images
Alshoabi et al. (fig. 1)

Alshoabi SA, Alkalady AH, Almas KM, et al. Hydatid Disease: A Radiological Pictorial Review of a Great Neoplasms Mimicker. Diagnostics (Basel). 2023 Mar 16;13(6):1127. doi: 10.3390/diagnostics13061127. PMID: 36980435; PMCID: PMC10047450.

License
CC BY 4.0
Modifications
Cropped
Alshoabi et al. (fig. 2)

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Kim AR, Park SJ, Gu MJ, Choi JH, Kim HJ. Fine Needle Aspiration Cytology of Hepatic Hydatid Cyst: A Case Study. J Pathol Transl Med. 2013;47(4):395-398.

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Herbert's Pits

3 images
Justin Risma / EyeRounds.org (fig. 1)

Dr. Thomas Oetting, EyeRounds.org University of Iowa @eyerounds on Instagram

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None
William Charles Caccamise Sr. / EyeRounds.org (fig. 2)

Dr. Thomas Oetting, EyeRounds.org University of Iowa @eyerounds on Instagram

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Gupta et al.

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Howell–Jolly Bodies

2 images
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Hutchinson's Notched Teeth

4 images
CDC / Susan Lindsley

CDC Public Health Image Library #2385

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CDC / Robert Sumpter

CDC Public Health Image Library #12599

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Garcia et al.

Garcia LN, Destito Solján A, Moroni S, Falk N, Gonzalez N, Moscatelli G, et al. (2021) Congenital syphilis in Argentina: Experience in a pediatric hospital. PLoS Negl Trop Dis 15(1): e0009010. https://doi.org/10.1371/journal.pntd.0009010

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G.H. Fox

Wikipedia

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Hutchinson's Sign

4 images
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Ozdemir F, Errico MA, Yaman B, Karaarslan I. Acral lentiginous melanoma in the Turkish population and a new dermoscopic clue for the diagnosis. Dermatol Pract Concept. 2018;8(2)140-148. DOI: https://doi.org/10.5826/dpc.0802a14

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Jaramillo-Arboleda et al.

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Hyper Sister Chromatid Exchange

4 images
Killen et al.

Killen MW, et al. Escherichia coli RecG functionally suppresses human Bloom syndrome phenotypes. BMC Mol Biol. 2012;13:33.

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Almendra et al.

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Inflammation of the Distal Interphalangeal Joint

2 images
Eichhoff and Harun

Eichhoff G, Harun NS. Psoriatic Arthritis and Nail Psoriasis in a Patient with Concomitant Atopic Dermatitis. Case Rep Dermatol Med. 2018 Feb 18;2018:4125856. doi: 10.1155/2018/4125856. PMID: 29670773; PMCID: PMC5835295.

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Akeda and Yamanaka

Akeda T, Yamanaka K. Treatment in Patients with Psoriatic Disease and Rheumatoid Arthritis: Seven Case Reports. Clinics and Practice. 2023;13(1):177-189. https://doi.org/10.3390/clinpract13010016

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Iris Pearls

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Keratoderma Blennorrhagicum

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Gupta et al.

Gupta V, Mohta P, Sharma VK, Khanna N. A retrospective case series of 12 patients with chronic reactive arthritis with emphasis on treatment outcome with biologics. Indian J Dermatol Venereol Leprol 2021;87:227-34. doi: 10.4103/ijdvl.IJDVL_519_18

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Kimmelstiel–Wilson Nodules

2 images
CDC / Dr. Edwin P. Ewing, Jr.

CDC Public Health Image Library #36

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Public Domain
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Jiang et al.

Jiang S, Di D, Jiao Y, Zou G, Gao H and Li W (2022) Complement Deposition Predicts Worsening Kidney Function and Underlines the Clinical Significance of the 2010 Renal Pathology Society Classification of Diabetic Nephropathy. Front. Immunol. 13:868127. doi: 10.3389/fimmu.2022.868127

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Koilocytes

4 images
Kamal (fig. 1)

Kamal M. Cervical pre-cancers: Biopsy and immunohistochemistry. CytoJournal 2022;19:38. doi: 10.25259/CMAS_03_13_202

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Kamal (fig. 2)

Kamal M. Cervical pre-cancers: Biopsy and immunohistochemistry. CytoJournal 2022;19:38. doi: 10.25259/CMAS_03_13_202

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Kamal (fig. 3)

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Koplik's Spots

4 images
CDC / Dr. Heinz F. Eichenwald

CDC Public Health Image Library #24424

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Mancy

Mancy A. Koplik's spots. Our Dermatol Online. 2023;14(4):448.

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Tran HM, Nguyen TL, Le DM. Fever with vesiculopapular eruptions mimicking varicella: an atypical presentation of measles in an unvaccinated adult. MedPharmRes. 2025;9(4):525-31.

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Zhang Y, Yu YS, Zang GQ. Maculopapular rash and Koplik's spots in adult measles. Revista da Sociedade Brasileira de Medicina Tropical. 2015 Mar;48:231-.

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Larva Currens

2 images
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Gardini G, Froeschl G, Puzzi PR, Gambino S, Erne EM. Dermatological Presentation of Strongyloides stercoralis Infection in Two Elderly Italian Inpatients. Pathogens. 2024;13(8):658. https://doi.org/10.3390/pathogens13080658

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Lichtenberg Figures

4 images
George et al.

George N, Bandi S, Ganti L, Umansky A, Desai B. Bounced off a Truck Out of the Blue: A Case Report of a Lightning Strike During a Thunderstorm. Cureus. 2020 Nov 17;12(11):e11534. doi: 10.7759/cureus.11534. PMID: 33354478; PMCID: PMC7746318.

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Lindford A, Juteau S, Jaks V, Klaas M, Lagus H, Vuola J and Kankuri E (2021) Case Report: Unravelling the Mysterious Lichtenberg Figure Skin Response in a Patient With a High-Voltage Electrical Injury. Front. Med. 8:663807. doi: 10.3389/fmed.2021.663807

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Byard (fig. 1)

Byard RW. Lichtenberg figures—morphological findings. Forensic Sci Med Pathol 19, 269–272 (2023). https://doi.org/10.1007/s12024-023-00612-7

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Byard (fig. 2)

Byard RW. Lichtenberg figures—morphological findings. Forensic Sci Med Pathol 19, 269–272 (2023). https://doi.org/10.1007/s12024-023-00612-7

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Lines of Zahn

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Tobouti et al.

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Lisch Nodules

4 images
Adams et al.

Adams EG, Stewart KM, Borges OA, Darling T. Multiple, unilateral lisch nodules in the absence of other manifestations of neurofibromatosis type 1. Case Rep Ophthalmol Med. 2011;2011:854784. doi: 10.1155/2011/854784. Epub 2012 Jan 23. PMID: 22606479; PMCID: PMC3350217.

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Bouirig and Cherkaoui

Bouirig K, Cherkaoui LO. Nodules de Lisch: marqueur ophtalmologique de la neurofibromatose de type 1. Pan Afr Med J. 2022 Jun 9;42:108. doi: 10.11604/pamj.2022.42.108.35079. PMID: 36034030; PMCID: PMC9392011.

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Antoniolli LP, Milman LM, Bonamigo RR. Dermoscopy of the iris: identification of Lisch nodules and contribution to the diagnosis of Neurofibromatosis type 1. An Bras Dermatol. 2021 Jul-Aug;96(4):487-489. doi: 10.1016/j.abd.2020.09.007. Epub 2021 May 21. PMID: 34030916; PMCID: PMC8245717.

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Lalchandani et al.

Lalchandani JS, Paul A. Left-right asymmetry in a case of bilateral Lisch nodules. Indian J Ophthalmol. 2022 Jul;70(7):2768. doi: 10.4103/ijo.IJO_500_22. PMID: 35791244; PMCID: PMC9426043.

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Lupus Pernio

4 images
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Sand et al.

Sand M, Sand D, Thrandorf C, et al. Cutaneous lesions of the nose. Head Face Med 6, 7 (2010). https://doi.org/10.1186/1746-160X-6-7

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Moumna R, Douhi Z, Baybay H, Elloudi S, Soughi M, Mernissi FZ. Red Nose, Deeper Cause: Lupus Pernio as A Sentinel Sign of Systemic Sarcoidosis. Sch J Med Case Rep. 2025 May;5:1053-6.

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Anjaneyan and Vora

Anjaneyan G, Vora R. Lupus pernio without systemic involvement. Indian Dermatol Online J. 2013 Oct;4(4):314-7. doi: 10.4103/2229-5178.120656. PMID: 24350015; PMCID: PMC3853900.

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Maltese Crosses in Red Blood Cells

3 images
CDC / Dr. R.G. Scholtens

CDC Public Health Image Library #20166. Dr. R.G. Scholtens. 1966.

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Public Domain
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Letter removed and Cropped
Joseph et al.

Joseph JT, et al. Vertical Transmission of Babesia microti, United States. Emerg Infect Dis. 2012;18(8):1318–1321.

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Lobo et al.

Lobo CA, et al. Babesia: An Emerging Infectious Threat in Transfusion Medicine. PLoS Pathog. 2013;9(7):e1003387.

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Molar Tooth Sign

4 images
Wente et al.

Wente S, et al. Nosological delineation of congenital ocular motor apraxia type Cogan: an observational study. Orphanet J Rare Dis. 2016;11(1):104.

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Mahomed and Prabhu

Mahomed N, Prabhu SP. Molar tooth sign—looking beyond the obvious: signs. SA J Radiol. 2013;17(3):102–103.

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Brancati F, Dallapiccola B, Valente EM. Joubert Syndrome and related disorders. Orphanet J Rare Dis. 2010;5:20.

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Byju et al.

Byju N, et al. Molar tooth sign with ataxia and see-saw nystagmus (Joubert syndrome). Ann Indian Acad Neurol. 2011;14(1):62–63.

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Moniliform Blepharosis

4 images
Tripathi and Kumar Gupta

Tripathi A, Kumar Gupta S. Lipoid Proteinosis Masquerading as Seborrheic Dermatitis. Cureus. 2021;13(6):e15617.

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Ng X, MPT J, Ang E. A Rare Ocular Manifestation of Lipoid Proteinosis. Cureus. 2025;17(4):e82423.

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Abtahi SM, et al. Urbach-Wiethe Syndrome and the Ophthalmologist: Review of the Literature and Introduction of the First Instance of Bilateral Uveitis. Case Rep Med. 2012;2012:281516.

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Ghazawi FM, et al. A novel nonsense mutation in exon 9 in the extracellular matrix protein 1 gene associated with lipoid proteinosis: A case report. SAGE Open Med Case Rep. 2019;7:2050313X19850359.

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Negri Bodies

4 images
CDC / Daniel P. Perl

CDC Public Health Image Library #3377. Daniel P. Perl. 1971.

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CDC / Makonnen Fekadu

CDC Public Health Image Library #854. Makonnen Fekadu.

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CDC / Tierkel

CDC Public Health Image Library #26954. Tierkel.

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Henry and Murphy

Henry R, Murphy FA. Etymologia: Negri Bodies. Emerg Infect Dis. 2017;23(9):1461.

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Non-Caseating Granuloma of Small Intestine

2 images
Kellermann and Riis

Kellermann L, Riis LB. A close view on histopathological changes in inflammatory bowel disease, a narrative review. Dig Med Res. 2021;4.

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Raza A, Chan V, Cheema MA. Atypical Clinical Presentation of Crohn's Disease as Diffuse Abdominal Lymphadenopathy and Venous Thrombosis. Cureus. 2019;11(9):e5805.

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Ovoid and Popcorn-like Soft Tissue Calcifications

1 image
Hsu et al.

Hsu V, et al. Use of dual-energy computed tomography for the evaluation of calcinosis in patients with systemic sclerosis. Clin Rheumatol. 2015;34(9):1557–1561.

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Palmar Crease Xanthoma

4 images
Maldonado Carrasco et al.

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Yang et al.

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Harris J, et al. Diffuse xanthomas in a patient with primary biliary cholangitis and lipoprotein X. JAAD Case Rep. 2021;7:30–32.

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Periodic Acid-Schiff Stain-Positive Macrophages

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Periductal Onion-Skin Fibrosis

4 images
Cazzagon et al.

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Prokopič and Beuers

Prokopič M, Beuers U. Management of primary sclerosing cholangitis and its complications: an algorithmic approach. Hepatol Int. 2021;15:6–20.

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Periungual Fibroma

4 images
Cascarino and Leclerc-Mercier

Cascarino M, Leclerc-Mercier S. Histological Patterns of Skin Lesions in Tuberous Sclerosis Complex: A Panorama. Dermatopathology. 2021;8(3):236–252.

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Reddy and Somani (fig. 1)

Reddy IS, Somani VK. Giant periungual and subungual fibromas (Koenen's tumor) of tuberous sclerosis complex. Indian J Dermatol Venereol Leprol. 2023;89(2):290–291.

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Reddy and Somani (fig. 2)

Reddy IS, Somani VK. Giant periungual and subungual fibromas (Koenen's tumor) of tuberous sclerosis complex. Indian J Dermatol Venereol Leprol. 2023;89(2):290–291.

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Comninos AN, et al. Frequent falls and confusion: recurrent hypoglycemia in a patient with tuberous sclerosis complex. Clin Case Rep. 2018;6(5):904–909.

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Pick Bodies

4 images
Ravasia and Hirsch-Reinshagen

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Castellani

Castellani RJ. The Significance of Tau Aggregates in the Human Brain. Brain Sci. 2020;10(12):972.

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Pinch Purpura of Eyelids

4 images
Nguyen and Nguyen

Nguyen HT, Nguyen CTH. Cardiac amyloidosis mimicking acute coronary syndrome: a case report and literature review. Eur Heart J Case Rep. 2020;4(6):1–7.

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Wang XF, et al. Periorbital purpura can be the only initial symptom of primary light chain amyloidosis: A case report. World J Clin Cases. 2024;12(26):5946–5951.

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Kelsey A, et al. Amyloidosis: A story of how inframammary erosions eclipsed inconspicuous periorbital ecchymoses. Int J Womens Dermatol. 2016;2(1):18–22.

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Pleural Plaques

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Pneumatosis Intestinalis

3 images
Wikipedia user Jto410 (fig. 1)

Jto410. Pneumatosis intestinalis CT. Wikipedia "Pneumatosis intestinalis" article. 2014.

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Wikipedia user Jto410 (fig. 2)

Jto410. Pneumatosis intestinalis radiograph. Wikipedia "Pneumatosis intestinalis" article. 2014.

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Popcorn Calcification in a Lung Nodule

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Porcelain Gallbladder

4 images
Pan et al.

Pan X-F, Aizezi B, Jia Z. Porcelain gallbladder secondary to chronic cholelithiasis with filled gallstones: A case report. Medicine. 2025;104(45):e45951.

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None
Goel et al.

Goel A, et al. Porcelain Gallbladder. Euroasian J Hepato-Gastroenterol. 2017;7(2):181–182.

Modifications
None

Purple Abdominal Striae

4 images
Bokhari

Bokhari M, Cele N. Striae in Cushing's syndrome. J Endocrinol Metab Diabetes S Afr. 2025;30(1):36.

Modifications
None
Asamoah et al.

Asamoah TK, et al. A case of Cushing Syndrome due to accidental intake of dexamethasone. Ghana Med J. 2021;55(2):152–155.

License
CC BY 4.0
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None
Shah et al.

Shah R, et al. Unveiling the Uncommon: A Case Series on Cushing's Disease During Pregnancy. Cureus. 2024;16(8):e66045.

License
CC BY 4.0
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None
Kishimoto et al.

Kishimoto I, Matsubara M. Color of Striae in Cushing Syndrome During Pregnancy. JCEM Case Rep. 2025;3(4):luaf036.

Modifications
None

Raindrop Skull

4 images
Karnan et al.

Karnan A, et al. Multiple Myeloma Presenting With Bronchopneumonia: A Case Report. Cureus. 2024;16(3):e56010.

License
CC BY 4.0
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None
Paschou and Sabanis

Paschou E, Sabanis N. Hypercalcaemia, acute renal failure, anemia, multiple vertebral lytic fractures, and raindrop skull: a quintet, perfect storm. PAMJ Clin Med. 2024;15(27).

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CC BY 4.0
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None
Alkhaibary et al.

Alkhaibary A, Alharbi A, Khairy S. Calvarial multiple myeloma: Raindrop skull. Surg Neurol Int. 2024;15:34.

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None
Bitelman et al.

Bitelman VM, et al. "Punched out" multiple myeloma lytic lesions in the skull. Autops Case Rep. 2016;6(1):7–9.

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None

Reinke Crystals

2 images
Gretser et al.

Gretser S, et al. Leydig Cell Tumor in a Patient with 46,XX Disorder of Sex Development (DSD), Ovotesticular: A Case Report and a Review of the Literature. Case Rep Pathol. 2021;2021:5552305.

License
CC BY 4.0
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None
Chavez et al.

Chavez TF, et al. Leydig tumor in normal sized ovaries causing clitoromegaly: A case report. Gynecol Oncol Rep. 2024;52:101345.

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None

Retinal Phakoma

4 images
Afshar et al.

Afshar P, et al. Retinal astrocytic hamartoma complicated by branch retinal vein occlusion in a patient with tuberous sclerosis complex. Am J Ophthalmol Case Rep. 2023;32:101920.

License
CC BY 4.0
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None
Qin et al.

Qin X, Tao Y, Zhang Z. Retinal astrocytic hamartoma in tuberous sclerosis complex in an elderly person: a case report. BMC Ophthalmol. 2018;18(1):319.

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CC BY 4.0
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None
McLean et al.

McLean K, Hussain R, Heimann H. Diagnostic imaging of retinal astrocytomas: A case-series. Eye. 2023;37:1019–1025.

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CC BY 4.0
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None
Dou et al.

Dou G, et al. Advantages of optical coherence tomography in assessing retinal astrocytic hamartomas in children with tuberous sclerosis complex. Front Med (Lausanne). 2026;13:1796812.

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CC BY 4.0
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None

Ringed Sideroblasts

2 images
Cai et al.

Cai J, et al. A novel and apparent de novo ALAS2 missense variant associated with congenital sideroblastic anemia. Front Pediatr. 2024;12:1411676.

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CC BY 4.0
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None
Rodriguez-Sevilla et al.

Rodriguez-Sevilla JJ, Calvo X, Arenillas L. Causes and Pathophysiology of Acquired Sideroblastic Anemia. Genes. 2022;13(9):1562.

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CC BY 4.0
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None

Romaña's Sign

4 images
CDC / Dr. Paul L. Rice

CDC Public Health Image Library #29450. Dr. Paul L. Rice. 1970.

License
Public Domain
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None
WHO/TDR

WHO/TDR. Romaña's sign in Chagas disease. StatPearls "Chagas disease" article.

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None
CDC / Dr. Mae Melvin

CDC Public Health Image Library #2617. Dr. Mae Melvin. 1962.

License
Public Domain
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None
Beucler et al.

Beucler N, Torrico F, Hibbert D. A tribute to Cecilio Romaña: Romaña's sign in Chagas disease. PLoS Negl Trop Dis. 2020;14(11):e0008836.

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CC BY 4.0
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None

Russell's Sign

3 images
Wikipedia user Kyukyusha

Kyukyusha. Russell's sign photograph. Wikipedia "Russell's sign" article. 2007.

License
Public Domain
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None
Young et al.

Young J, Henderson MC, Thompson GR. Anorexia Nervosa: Russell's Sign with Concurrent Tetany. J Gen Intern Med. 2011;26:668.

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None
Rikhari et al.

Rikhari P, Kumar A. Russell's sign in obsessive–compulsive disorder. Indian J Psychiatry. 2021;63:200–201.

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None

Schiller–Duval Bodies

4 images
Silva et al.

Silva LLCD, et al. Yolk sac primary tumor of mediastino: a rare case in a young adult. Einstein (Sao Paulo). 2017;15(4):496–499.

License
CC BY 4.0
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None
Fischerova et al.

Fischerova D, et al. Yolk Sac Tumor of the Omentum: A Case Report and Literature Review. Diagnostics. 2022;12(2):304.

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CC BY 4.0
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None
Sung et al.

Sung HJ, et al. Primary hepatic mixed germ cell tumor in an adult. J Pathol Transl Med. 2021;55(5):355–359.

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None
Harano et al.

Harano K, et al. Primary yolk sac tumor of the omentum: a case report and literature review. Case Rep Oncol. 2012;5(3):671–675.

Modifications
None

Silver Stool / Thomas' Sign

1 image
Tang et al.

Tang TY, Walsh SR, Clarke JMF. The diagnostic value of silver stool (Thomas' sign). BJS. 2012.

Modifications
None

Spongiform Tissue in Grey Matter

2 images
CDC / Teresa Hammett

CDC Public Health Image Library #10131. Teresa Hammett.

License
Public Domain
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None
Urwin et al.

Urwin P, et al. Sporadic Creutzfeldt-Jakob Disease in 2 Plasma Product Recipients, United Kingdom. Emerg Infect Dis. 2017;23(6):893–897.

License
Public Domain
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None

Strawberry Gingivitis

4 images
Tamigoes and Setiadhi

Tamigoes Y, Setiadhi R. Strawberry gingivitis as the first sign of Wegener's granulomatosis: a case report. J Dentomaxillofac Sci. 2019;4(1):49–52.

License
CC BY 4.0
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None
Sung et al.

Sung IY, et al. Role of gingival manifestation in diagnosis of granulomatosis with polyangiitis (Wegener's granulomatosis). J Periodontal Implant Sci. 2015;45(6):247–251.

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None
Tsukui et al.

Tsukui D, et al. Strawberry Gingivitis: Rare Early Manifestation of Relapsing Granulomatosis with Polyangiitis. Balkan Med J. 2025;42(4):371–372.

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None
Dhalkari et al.

Dhalkari CD, et al. Strawberry gingivitis — First sign of Wegener's granulomatosis. J Oral Maxillofac Pathol. 2020;24(1):172–175.

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None

Starry Sky

2 images
Smith et al.

Smith D Jr, Reid DM, Mascio AA, Noel BO, Giangreco M. Composite Burkitt Lymphoma and Classical Hodgkin Lymphoma in an Human Immunodeficiency Virus (HIV)-Positive Patient. Cureus. 2024 Jun 21;16(6):e62827. doi: 10.7759/cureus.62827. PMID: 39040737; PMCID: PMC11260658.

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CC BY 4.0
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None
Chinthagada et al.

Chinthagada JE, Gorman PT, Fogle RR, Kutaish N, Diep D. Ileocolic intussusception as the initial presentation of Burkitt lymphoma in a 27-year-old male: a case report. Journal of Surgical Case Reports. 2025 Jun;2025(6):rjaf460.

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CC BY 4.0
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None

Thumbprinting on AXR

2 images
Cutinha et al.

Cutinha AH, De Nazareth AG, Alla VM, Bewtra A. Clues to colitis: tracking the prints. West J Emerg Med. 2010 Feb;11(1):112-3. PMID: 20411101; PMCID: PMC2850843.

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None
Lee et al.

Lee HH, Sritharan N, Bermingham D, Strey G. Ocrelizumab-induced severe colitis. Case Reports in Gastrointestinal Medicine. 2020;2020(1):8858378.

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CC BY 4.0
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Wickham Striae

5 images
Ślebioda et al.

Ślebioda Z, et al. Oral Lichen Planus: Clinical Presentation, Demographic Characteristics, and Risk Factors in a Retrospective Study of 186 Polish Patients. J Clin Med. 2024;13(23):7363.

License
CC BY 4.0
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Gurav et al.

Gurav T, et al. Clinical Characteristics, Identification, and Treatment of Lichen Planus: A Case Report. Cureus. 2024;16(7):e65712.

License
CC BY 4.0
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None
Kowe et al.

Kowe P, et al. Oral lichen planus: Mucoscopic perspective. J Skin Sex Transm Dis. 2025;7:118–120.

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None
DermNetNZ

DermNetNZ. Lichen planus — Wickham striae. DermNetNZ Image Library.

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None
Pastore et al.

Pastore L, Fiorella ML, Fiorella R, Lo Muzio L. Multiple Masses on the Tongue of a Patient with Generalized Mucocutaneous Lesions. PLoS Med. 2008;5(11):e212.

License
CC BY 4.0
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None

All images are used in accordance with their respective Creative Commons licenses. If you believe an attribution is incorrect or incomplete, please contact me.