Basal cell carcinoma of the anus: report of three cases.
D001003:Anal Canal; D001005:Anus Neoplasms; D002277:Carcinoma; D002280:Basal Cell Carcinoma; D006801:Humans; D008499:Medical Records; D012878:Skin Neoplasms
ANUS/neoplasms; CARCINOMA, BASAL CELL/case reports