肺内孤立性结节、肿块涉及的病种多，临床甚为常见，其CT诊断与鉴别诊断是胸部CT诊断中的一个难点。笔者结合不发达地区医院放射科CT设备陈旧、检查往往不完善、临床资料不全面，给CT诊断更增加了难度的现状，采用多位作者盲法回顾性诊断的比较研究，分析肺内孤立性结节、肿块C Pulmonary solitary nodules, lumps involved in many diseases, the clinical is very common, the CT diagnosis and differential diagnosis of chest CT is a difficult diagnosis. Combined with the obsolete radiology CT equipment in underdeveloped areas, the examination is often imperfect, clinical data is not comprehensive, CT diagnosis to increase the difficulty of the status quo, using a number of authors blind retrospective diagnosis of comparative study of pulmonary solitary Nodules, lumps