肺上叶前段或舌段病变病因较多，其病因首先考虑为恶性肿瘤［１］。随着医务人员的重视和ＣＴ检查技术的运用以及纤维支气管镜技术的不断完善，对肺上叶前段或舌段病变及临床特点有了新的认识，临床误诊率明显减少。现将我院１９９４年１月～１９９９年５月收治的８４例肺上叶 The etiology of the anterior segment of the upper lobe or the tongue segment lesions is more, and the cause of the disease is first considered as a malignant tumor [1]. With the attention of medical staff and the use of CT examination technology and the continuous improvement of fiberoptic bronchoscopy, there is a new understanding of the anterior segment of the upper lobe or tongue lesions and clinical features, and the clinical misdiagnosis rate is significantly reduced. The upper lobe of 84 cases admitted to our hospital from January 1994 to May 1999