老年人原发性十二指肠腺癌发病隐匿，症状不典型、体征不明显而易误漏诊。我们对3家医院1987～1997年经手术和病理确诊的33例误漏诊情况从临床症状和辅助检查等方面进行了分析，现报道如下。1临床资料1．1一般资料本组33例中男25例，女8例，男：女为3：1。年龄60～82（平均65） The incidence of primary duodenal adenocarcinoma in the elderly is occult, and the symptoms are not typical, the signs are not obvious, and it is easy to misdiagnose. We analyzed the 33 cases of misdiagnosis and misdiagnosis of 3 hospitals diagnosed by surgery and pathology from 1987 to 1997 from the aspects of clinical symptoms and auxiliary examinations. The report is as follows. 1 Clinical data 1.1 General information The group of 33 cases of 25 males and 8 females, male: female 3:1. Age 60-82 (average 65)