[The acquired digital fibrokeratoma].

A case of acquired digital fibrokeratoma is presented. The asymptomatic cylindrical tumor preferably occurs during the third to sixth decade of life and affects mainly the fingers. Histologically one finds a cylindriform connective tissue proliferation surrounded by an akantholytic band of epidermis with papillomatous changes and hyperkeratosis. For differential diagnosis rudimentary supernumerary digit, cutaneous horn and granuloma pyogenicum are to be considered. Therapy consists of excision of this benign tumor of hitherto unknown origin.