引起肺弥漫性病变的病因多达 2 0 0余种 ,单纯影像学难以明确诊断 ,最后诊断有赖于获得肺组织病理诊断。开胸肺活检可取得较好的标本。但因损伤大、痛苦 ,病人一般难接受 ,而经纤维支气管镜肺活检 (TBLB)为其提供了一种安全简便的方法。我们对 2 0 0 0年 4月至 2 0 0 4年 8月的 The causes of diffuse lung disease as many as 200 species, imaging difficult to confirm a clear diagnosis, the final diagnosis depends on the pathological diagnosis of lung tissue. Open chest biopsy can get better specimens. However, due to injury, pain, the patient is generally difficult to accept, and through the bronchoscopic lung biopsy (TBLB) provides a safe and easy way. We are from April 2000 to August 2004