痰细胞学诊断肺癌的不同敏感性的主要原因是痰标本不足够。支气管镜检查虽然是侵害性,但仍为诊断肺癌的主要方法。本文对疑有肺癌病人用咳痰法、支气管镜检查和常规咳痰法诊断肺癌进行比较。未能明确诊断,而临床首发症状或 X 线胸片疑为肺癌者随机分为两组。一组连续4天超声雾化导痰,另一组连续4天常规 The main reason why sputum cytology diagnoses the different sensitivities of lung cancer is that sputum specimens are not sufficient. Although bronchoscopy is invasive, it is still the main method for diagnosing lung cancer. This article compares lung cancer patients diagnosed with cough, bronchoscopy, and conventional cough. There was no clear diagnosis, and clinical first symptoms or X-ray suspected lung cancer were randomly divided into two groups. A group of ultrasound guided nebulizers for 4 consecutive days, another group of 4 days conventional