Flat-Pan Nail-Wide Acquired Epiungual Fibrokeratoma: Report of 4 Cases.

Acquired digital fibrokeratoma (ADFK) is a benign tumor. Clinically, it usually presents as skin-colored, slow-growing firm fibrous projection with a characteristic hyperkeratotic collarette at its base. It has a predilection for the periungual tissue. Some clinical variations have been described according to its macroscopic appearance and relation to the nail apparatus. The authors present 4 cases of unique ADFK expanding over the whole width of the nail.