对象与方法作者以1987年至1997年手术的20例90岁以上进行性大肠癌患者为研究对象,男8例,女12例。并以同期收治的103例75～79岁进行性大肠癌患者为对照组,比较临床病理学改变。此外,作者将1974～1986年收治的17例90岁以上患者作为前期对照组,男3例,女14例,比较急症手术率、切除率及死亡率。 Subjects and Methods The authors studied 20 patients aged 90 years or older with progressive colorectal cancer from 1987 to 1997. There were 8 males and 12 females. 103 patients with advanced colorectal cancer from 75 to 79 years old treated in the same period as the control group were compared for clinical pathological changes. In addition, the authors used 17 patients over the age of 90 admitted from 1974 to 1986 as an early control group, including 3 males and 14 females. The rates of emergency surgery, resection rate, and mortality were compared.