肺癌是危害劳动人民健康的常见恶性肿瘤之一,占我国大多数地区肿瘤发病的第二位。随着医学科学的不断发展和肺癌防治工作的开展,肺癌按发病部位的X线分型已不敷临床要求,肺癌组织细胞分类的X线诊断逐渐被重视。当临床脱落细胞检查暂时阴性或不能 Lung cancer is one of the common malignancy that endangers the working people’s health, and it accounts for the second highest incidence of cancer in most areas of China. With the continuous development of medical science and the development of prevention and treatment of lung cancer, the X-ray classification of lung cancer at the site of its onset is not enough to meet clinical requirements. X-ray diagnosis of cell classification of lung cancer cells has gradually been taken seriously. When clinically exfoliated cells are temporarily negative or cannot be checked