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Presentation
A 65-year-old woman visited her doctor about a growth that developed on her finger 2 months prior. It was not painful or itchy and had not grown since she first noticed it. On examination, a solitary, smooth, pinkish papule with a tiny central crust was seen on her distal interphalangeal joint on her right index finger. The patient had a history of osteoarthritis. Skin biopsy histopathology showed a well-circumscribed superficial collection of dermal mucin without a true cyst lining; The overlying epidermis was atrophic, hyperplastic or hyperkeratotic; with a variable increase in fibroblasts and absent fibrous wall. Can you diagnose the patient?
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36% a) Epidermoid cyst
18% b) Ganglion cyst
11% c) Glomus tumor
24% d) Myxoid cyst
Learnings
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