本研究旨在确定表现为孤立性肺结节(SPN)的小细胞肺癌(SCLC)在临床和病理学方面,与其它局限期病例(LD)、尤其是与LD中长期生存者(LTS)有何异同。复查408例诊断为SCLC病人的记录,包括年龄、性别、吸烟史和肿瘤分期,从中选出两组进行分析。一为SPN组,其肿块直径小于6cm,球形,界限清楚,肺门及纵隔无病变,无胸膜渗出和远处转移。另一组为LTS The aim of this study was to determine the clinical and pathological features of small cell lung cancer (SCLC) in the presence of solitary pulmonary nodules (SPN), as well as in other limited-dose cases (LD), especially those with long-term survival (LTS) in LD. What is different? A review of 408 records of patients diagnosed as having SCLC, including age, gender, smoking history, and tumor stage, was performed and two groups were selected for analysis. One is the SPN group, whose mass diameter is less than 6cm, spherical, clear boundaries, hilar and mediastinal lesions, no pleural effusion and distant metastasis. Another group is LTS