目的　提高X线检查对肺内孤立球形病变诊断重要性的认识。方法　 40 2例肺内孤立球形病变 ,其中手术及病理证实3 98例 ,4例肺脓肿经临床证实。全部病例均摄胸部正位片 ,3 68例有侧位胸片 ,95例有病灶体层。结果　常见病周围型肺癌 96例 ,肺结核瘤 3 3例 ,肺包虫病 2 5 3例 ,肺脓肿 9例 ,转移瘤 3例。炎性假瘤、错构瘤、肺肉瘤各 2例。肺母细胞瘤、肺纤维瘤各 1例。常见病大多有典型X线表现 ,结合临床诊断容易明确。少见病有时缺乏特征性表现 ,大多数诊断较为困难。结论　X线检查对肺内孤立球形病变的诊断有重要的价值 ,仍为首选的方法。 Objective To improve the understanding of the importance of X-ray examination in the diagnosis of solitary spheroplasty in the lung. Methods One hundred and forty-two cases of isolated pulmonary lesions in the lungs, of which surgical and pathological confirmed 3 98 cases, 4 cases of lung abscess clinically confirmed. All cases were taken chest anteroposterior films, 3 68 cases of lateral chest radiography, 95 cases of the lesion. Results Of the 96 cases of peripheral lung cancer, 33 cases of tuberculosis, 25 cases of pulmonary echinococcosis, 9 cases of lung abscess and 3 cases of metastases. Inflammatory pseudotumor, hamartoma, pulmonary sarcoma in 2 cases. Pulmonary blastoma, pulmonary fibroma in 1 case. Most of the common diseases have typical X-ray manifestations, combined with clinical diagnosis easily and clearly. Sometimes, the lack of characteristic manifestations of rare disease, most of the diagnosis is more difficult. Conclusion X-ray examination is valuable for the diagnosis of solitary spheroplasty in the lung and remains the first choice.