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目的分析肺小结节的影像学和临床特征。方法对７６例肺内孤立小结节病例进行回顾性分析，总结其特征。结果恶性肿瘤４４例，良性病变３２例。良、恶性组小结节边缘不清者分别占１２％和３８％；有毛刺者分别占１８％和４５％；有钙化者分别占２５％和３％。恶性病变以肺泡细胞癌多见，占４５％；良性病变以结核较多见，占４４％。４５岁以下、４６～５９岁及６０岁以上组恶性肿瘤分别占２０％、６３％和７８％。结论小结节边缘不清、有毛刺和钙化是确定小结节良恶性的主要依据。４５岁以上的小结节以恶性病变多见。
Objective To analyze the imaging features and clinical features of pulmonary nodules. Methods Totally 76 small pulmonary nodules were retrospectively analyzed and their characteristics were summarized. Results Malignant tumors in 44 cases, benign lesions in 32 cases. In benign and malignant groups, the margins of small nodules were 12% and 38% respectively; those with burr accounted for 18% and 45% respectively; those with calcifications accounted for 25% and 3% respectively. Malignant lesions more common in alveolar cells, accounting for 45%; benign lesions more common in tuberculosis, 44%. Cancer patients under 45 years of age, 46 to 59 years old and 60 years of age group accounted for 20%, 63% and 78% respectively. Conclusions The margins of small nodules, burr and calcification are the main basis to determine the benign and malignant nodules. Nodules over the age of 45 more common with malignant lesions.