我院1976～1983年收治直肠癌487例,其中30岁以下者57例,占11.7％。男30例,女27例。 管状腺癌31例,粘液腺癌17例,印戒细胞癌7例,平滑肌瘤恶变1例,恶性黑色素瘤1例,粘液腺癌及印戒细胞癌比中,老年组高,这是青年组病期晚,预后差的原因。 大体分型浸润型12例,溃疡型31例,肿块型14例。浸润型比例高,也是预后不良的原因。 Our hospital received 487 cases of rectal cancer from 1976 to 1983, of which 57 cases were under the age of 30, accounting for 11.7%. There were 30 males and 27 females. There were 31 cases of tubular adenocarcinoma, 17 cases of mucinous adenocarcinoma, 7 cases of signet ring cell carcinoma, 1 case of malignant leiomyoma, 1 case of malignant melanoma, 1 case of mucinous adenocarcinoma, and signet ring cell carcinoma. Late stage of the disease and poor prognosis. There were 12 cases of gross type infiltration, 31 cases of ulcer, and 14 cases of mass. The high rate of infiltration is also a cause of poor prognosis.