Basal cell carcinoma occurring in a fistula-inano.
D001003:Anal Canal; D002277:Carcinoma; D002280:Basal Cell Carcinoma; D005402:Fistula; D006801:Humans; D012878:Skin Neoplasms
ANUS/fistula; CARCINOMA, BASAL CELL; FISTULA