[PRECANCEROUS LESIONS IN PROCTOLOGY: DIAGNOSIS AND TREATMENT].
D001005:Anus Neoplasms; D003107:Colorectal Surgery; D006801:Humans; D009369:Neoplasms / Q000209:etiology*; D011349:Proctitis; D012004:Rectal Neoplasms
ANUS NEOPLASMS; NEOPLASM ETIOLOGY; PROCTITIS; RECTAL NEOPLASMS
LES OES PR'E-CANCEROSAS EM PROCTOLOGIA: DIAGN'OSTICO E TRATAMENTO.