Cancer of the rectum and sigmoid.
D000230:Adenocarcinoma / Q000601:surgery; D002288:Adenocarcinoma, Mucinous / Q000601:surgery*; D001005:Anus Neoplasms / Q000601:surgery*; D002277:Carcinoma / Q000601:surgery; D002294:Carcinoma, Squamous Cell / Q000601:surgery*; D006801:Humans; D008113:Liver Neoplasms / Q000209:etiology; D008207:Lymphatic Metastasis; D008545:Melanoma / Q000601:surgery*; D009362:Neoplasm Metastasis; D012004:Rectal Neoplasms / Q000601:surgery*; D012811:Sigmoid Neoplasms / Q000601:surgery*