Onychomatricoma, a rare tumor of the nail apparatus: report of three cases

Onychomatricomas are rare benign tumors originating from the nail matrix and underlying stroma. They are usually asymptomatic and slow growing, affecting both middle-aged men and women, and more frequently involve the digits of the hands. Key clinical features for diagnosis are: yellowish longitudinal band of variable width, splinter hemorrhages, longitudinal grooves associated with the transverse overcurvature and fingerlike projections emerging from the nail matrix. The authors report three cases of this tumor affecting toes, emphasizing main clinical aspects, dermoscopic findings, and surgical treatment.

Keywords: NAILS; NAILS, MALFORMED; NEOPLASMS.