Intraepidermal cancer of the anus; evolution to invasive growth.
D001003:Anal Canal; D001005:Anus Neoplasms; D002277:Carcinoma; D002294:Carcinoma, Squamous Cell / Q000473:pathology*; D006801:Humans; D009369:Neoplasms
ANUS/neoplasms; CARCINOMA, EPIDERMOID/pathology