直肠癌是消化道常见的恶性肿瘤,其发病率在胃肠道系统仅次于胃癌,占第2位。由于种种原因,早期发现者很少,常常延误诊断与治疗。本院1988～1997年,收治入院前被误诊的直肠癌130例,现对其误诊原因进行分析。1　临床资料1.1　一般情况　本组130例,男72例,女58例;年龄20～77岁,平均 Rectal cancer is a common malignancy of the digestive tract. Its incidence is second only to gastric cancer in the gastrointestinal system. For a variety of reasons, early detection is rare and diagnosis and treatment are often delayed. In the hospital from 1988 to 1997, 130 cases of rectal cancer were misdiagnosed before admission, and the reasons for misdiagnosis were analyzed. 1 Clinical data 1.1 General The group of 130 cases, 72 males and 58 females; aged 20 to 77 years, average