细支气管肺泡癌 ,简称肺泡癌 ,按病变范围又分为孤立结节型和弥漫浸润型两种。近几年来 ,肺泡癌 ,尤其是弥漫型肺泡癌呈增多趋势 ,因其 CT征象及临床特点缺乏特异性 ,故在临床不易早期发现。我院 1989- 0 6 / 2 0 0 0 - 0 4经病理证实的误诊病例 2 1例 ,现就误诊原因报道如下。 Bronchioloalveolar carcinoma, referred to as alveolar carcinoma, is divided into two types: isolated nodular type and diffuse infiltrating type. In recent years, alveolar carcinoma, especially diffuse alveolar carcinoma, has shown an increasing trend. Because of its lack of specific CT features and clinical features, it is not easy to find early in clinical practice. There were 21 misdiagnosed cases confirmed by pathology in our hospital 1989- 0 6 / 2 0 0 0 - 04 . The reasons for misdiagnosis are reported below.