Depth of invasion, location, and size of cancer of the anus dictate operative treatment.
D000328:Adult; D000368:Aged; D001005:Anus Neoplasms / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D002294:Carcinoma, Squamous Cell / Q000401:mortality / Q000473:pathology / Q000601:surgery*; D006801:Humans; D008197:Lymph Node Excision; D008207:Lymphatic Metastasis; D008875:Middle Aged; D009361:Neoplasm Invasiveness; D011379:Prognosis