[Basal cell carcinoma of the anus].
D000368:Aged; D001004:Anus Diseases / Q000175:diagnosis; D001005:Anus Neoplasms / Q000175:diagnosis*; D002280:Basal Cell Carcinoma / Q000175:diagnosis*; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012883:Skin Ulcer / Q000175:diagnosis