Intraepidermal squamous cell carcinoma (Bowen's disease) of the nail bed.
D000368:Aged; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D006801:Humans; D008297:Male; D009262:Nails / Q000473:pathology*; D012871:Skin Diseases / Q000473:pathology*; D014034:Toes