支气管肺泡灌洗被推荐用于间质性肺部疾病的肺泡炎诊断,亦已用于获取肺泡蛋白蓄积症、组织细胞增多症X和肺泡出血的诊断标本。作者介绍了用此法诊断一例X线表现为弥漫型细支气管一肺泡细胞癌的体会。患者男性,68岁,因咳嗽和呼吸困难七个月就诊。患者平素体健,七月前发热、寒战、咳嗽和充血继之出汗24小时,X线胸片左下肺浸润,予抗菌素治疗,临床和X线表现改善。入院前三个月,咳嗽加剧,不适,体重下降,胸片示左肺广泛性浸润 Bronchoalveolar lavage is recommended for the diagnosis of alveolitis in interstitial lung disease and has also been used as a diagnostic specimen for alveolar proteinosis, histiocytosis X and alveolar hemorrhage. The authors describe the use of this method to diagnose a case of X-ray showed diffuse bronchiolar alveolar cell carcinoma experience. Male patient, 68 years old, with seven months of cough and dyspnea. Patients usually healthy, fever, chills, cough and hyperemia followed by sweating 24 hours, chest X-ray infiltration of the lower left lung, antibiotic treatment, clinical and X-ray findings improved. Three months before admission, the cough intensified, discomfort, weight loss, chest X-ray showed extensive infiltration of the left lung