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目的 通过孤立性肺结节 (SPN)与周围血管的CT—病理对照观察 ,试图对SPN的鉴别诊断提供帮助。 方法 对80例SPN(病灶直径0.7～3.5cm ,平均2.5±0.8cm)作肺部CT常规10mm加局部薄层 (2mm或5mm)扫描 ,观察病灶及周围血管形态并作测量和分类。结果 手术病理证实良性SPN32例 ,恶性SPN48例 ,血管集束征的总出现率为85.0%(68/80),其中恶性SPN为93.8% (45/48) ,良性SPN为71.9% (23/32) ,两者的差别有显著性意义 (P<0.05)。血管集束征可分为五种表现类型 ,在良、恶性SPN中的出现率有明显差别。恶性SPN的平均血管总直径为5.0±1.6mm ,明显大于良性SPN(2.0±0.5mm) ,两者的差别有显著性意义 (P<0.05)。结论 CT薄层扫描能很好显示SPN与血管的关系 ;血管集束征的出现提示肺癌可能 ;其分型对SPN的鉴别有较大帮
OBJECTIVE: To investigate the differential diagnosis of SPN by observing CT-pathology of isolated pulmonary nodules (SPNs) and peripheral blood vessels. Methods 80 cases of SPN (lesion diameter 0.7 ~ 3.5cm, average 2.5 ± 0.8cm) were screened by conventional 10mm lung CT scan (2mm or 5mm), and the lesion and its surrounding blood vessels were observed and classified. Results There were 32 cases of benign SPN and 48 cases of malignant SPN. The total number of malignant SPN was 85.0% (68/80). The malignant SPN was 93.8% (45/48) and the benign SPN was 71.9% (23/32) , The difference between the two was significant (P <0.05). There are five manifestations of vascular bundles, with significant differences in the incidence of benign and malignant SPN. The mean total vessel diameter of malignant SPN was 5.0 ± 1.6mm, which was significantly higher than that of benign SPN (2.0 ± 0.5mm). There was a significant difference between the two groups (P <0.05). Conclusion CT thin-section scan can well show the relationship between SPN and blood vessels; the appearance of vascular bundles signifies the possibility of lung cancer; the classification of SPN has a greater help