上消化道大出血是临床急症 ,虽然常见病因已为大家熟知 ,但仍有误诊 ,而少见病因更易造成诊断上的困难。我们于 1994年2月～ 1999年 2月共收治上消化道大出血 2 46例 ,在外院或门诊误诊 2 9例 ,误诊率 11.8%。为吸取教训 ,现将资料完整并经胃镜检查和手术证实的 16例误诊病例进 Upper gastrointestinal bleeding is a clinical emergency, although the common cause has been well-known, but there are still misdiagnosed, while the more common cause of the diagnosis of difficult causes. In February 1994 to February 1999, we received a total of 246 cases of upper gastrointestinal bleeding, misdiagnosis in the out-patient or out-patient 29 cases, the misdiagnosis rate was 11.8%. To draw lessons, the 16 cases of misdiagnosed cases, which are now fully data verified by gastroscopy and surgery