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本文对４５例肺部阴影患者经痰培养三次阴性、痰结核菌检查三次阴性、痰细胞学检查三次阴性及纤维支气管镜检查均不能确诊，而用纤维支气管镜肺活检和肺泡灌洗检查，明确了诊断，其诊断率为９１．１％。经纤维支气管镜肺活检的诊断率高于肺泡灌洗术，分别为７１．１％、１５．６％。同时对肺泡灌洗液细胞成分进行分析，不同的肺部疾病，肺泡灌洗液细胞成分不同，这对疾病的诊断有很大的帮助。经纤维支气管镜肺活检和肺泡灌洗术对肺部疾病的研究、诊断和治疗具有重要价值。
In this paper, 45 cases of lung shadow patients sputum culture negative three times, sputum TB test negative three times, sputum cytology three negative and bronchoscopy were not diagnosed, but with bronchoscopy lung biopsy and alveolar lavage examination, clear The diagnosis, the diagnosis rate was 91.1%. The diagnostic rate of bronchoscopic lung biopsy was higher than that of alveolar lavage, 71.1% and 15.6% respectively. At the same time analysis of the cellular components of the alveolar lavage fluid, different lung diseases, different cellular components of the alveolar lavage fluid, which is of great help in the diagnosis of the disease. The bronchoscopic lung biopsy and bronchoalveolar lavage lung disease research, diagnosis and treatment of great value.