Basaloid tumors of the anus.
D001003:Anal Canal; D001005:Anus Neoplasms; D002277:Carcinoma; D002280:Basal Cell Carcinoma / Q000706:statistics & numerical data*; D006801:Humans; D009369:Neoplasms
ANUS/neoplasms; CARCINOMA, BASAL CELL/statistics