痰液细胞学检查诊断肺癌,标本采样方便,不需要昂贵设备,技术亦较易掌握,诊断的敏感性和特异性都较高,而且可发现一些X线所不能发现的早期肺癌。痰液细胞学检查的阳性率受多种因素影响。痰质优劣、痰检次数、肿瘤部位、组织类型以及检查的细致程度等均可影响检出率。 Sputum cytology diagnosis of lung cancer, sample sampling convenient, no expensive equipment, technology is also easier to grasp, the sensitivity and specificity of the diagnosis are higher, and can be found in some X-ray can not find early lung cancer. The positive rate of sputum cytology is affected by many factors. The quality of prosthesis, the number of seizures, the location of the tumor, the type of tissue, and the degree of detail of the examination can all affect the detection rate.