纵隔型肺癌临床上多以纵隔肿块及上腔静脉压迫综合征为其主要表现 ,呼吸道症状较少见 ,与纵隔恶性淋巴瘤表现相似 ,易误诊 [1 ]。我院 1994～ 1998年收治 82例纵隔型肺癌 ,其中15例经病理证实误诊 ,误诊率 18.3% ,报告如下。1　临床资料本组男 9例 ,女 4例。年龄 2 1～ 75岁 , Mediastinal lung cancer and clinical mediastinal masses and superior vena cava syndrome is its main performance, respiratory symptoms are rare, and the performance of mediastinal lymphoma similar to misdiagnosis [1]. 82 cases of mediastinal lung cancer were admitted to our hospital from 1994 to 1998, of which 15 cases were misdiagnosed by pathology, the misdiagnosis rate was 18.3%. The report is as follows. 1 Clinical data The group of 9 males and 4 females. Age 2 1 ~ 75 years old,