Basal cell carcinoma of the anal area.
D001003:Anal Canal; D001005:Anus Neoplasms; D002277:Carcinoma; D002280:Basal Cell Carcinoma / Q000473:pathology*; D006801:Humans; D012878:Skin Neoplasms
ANUS/neoplasms; CARCINOMA, BASAL CELL/pathology