Subungual Squamous Cell Carcinoma Masquerading as an Onychomycosis

Tumors of nail unit may be benign or malign. Different histological variants of subungual tumours have been reported. Subungual squamous cell carcinoma is rare, and the disease is often misdiagnosed as a benign condition, therefore it is difficult to estimate the real incidence of this disease. We hereby present a case of subungual squamous cell carcinoma that has previously been treated as leading to a delay in diagnosis and treatment. For this reason, the nail unit changes should be examined carefully and the diagnosis should be done with the histopathological examinations. Proper treatment should be planned according to the histopathological diagnosis.