Vanek V W, Whitt C L, Abdu R A, Kennedy W R
Am Surg. 1986 Sep;52(9):504-9.
Three hundred fifteen cases of adenocarcinoma were analyzed for differences between lesions in the right colon, left colon, and rectum for the period 1978 to 1983. The right colon cancers accounted for 1/3 of the cases and were associated with a higher incidence of anemia. The incidence of obstruction was the same between the right and left colon but lower for the rectal lesions. Left colon and rectal cancers had a higher incidence of gross bleeding than right colon cancers, but all had a high rate of occult blood in the stool. The Duke stage of the lesions, which was similar throughout the colon and rectum, is a reliable prognostic indicator.
对1978年至1983年期间的315例腺癌病例进行了分析，以探讨右半结肠、左半结肠和直肠病变之间的差异。右半结肠癌占病例的1/3，且与较高的贫血发生率相关。右半结肠和左半结肠的梗阻发生率相同，但直肠病变的梗阻发生率较低。左半结肠癌和直肠癌的肉眼出血发生率高于右半结肠癌，但所有病例的粪便潜血率均较高。病变的杜克分期在整个结肠和直肠中相似，是一个可靠的预后指标。
