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Clin Exp Dermatol. 1994 May;19(3):230-5.

Subungual keratoacanthoma--a report of four cases and review of the literature.

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  • 1Department of Dermatology, Bristol Royal Infirmary, UK.


Subungual keratoacanthoma is a rare benign neoplasm which most commonly occurs in middle-aged Caucasians. It usually presents as a painful, rapidly growing lesion of the terminal phalanx. Radiography consistently demonstrates a well-defined cup-shaped erosion of the underlying bone. Clinically, subungual keratoacanthoma must be distinguished from subungual squamous carcinoma. We report four further cases and discuss the literature.

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