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目的研究肺结节内透亮影的CT表现及其意义。方法共收集经手术病理证实的59例肺结节(直径≤4 cm),其中肺癌结节36例,其他良性结节23例。扫描机型为Philips 16排螺旋CT机。全部病例平扫,54例增强扫描。常规胸部平扫后,以病变部位为中心,薄层扫描。CT重点分析肺结节内透亮影的形态、大小及分布。比较结节内透亮影出现的比率。χ2检验统计分析相关数据。结果良、恶性肺结节内出现点状和多点状透亮影的百分比分别是3%,22%以及2%和15%;良、恶性结节相差显著(P<0.05),两者出现在条线状和不规则状形态透亮影中比率相差不显著(P>0.05)。结论肺结节内点状、多点状透亮影在良、恶性结节中出现率有显著差异,对病变的定性诊断有较大的意义。
Objective To study the CT findings of transillumination in pulmonary nodules and its significance. Methods Fifty-nine pulmonary nodules (diameter≤4 cm) confirmed by surgery and pathology were collected, including 36 lung cancer nodules and 23 other benign nodules. The scanner is Philips 16-row spiral CT. All cases of plain scan, 54 cases of enhanced scanning. Conventional chest scan, the lesion as the center, thin layer scan. CT focuses on analyzing the shape, size and distribution of translucent shadow in pulmonary nodules. Compare the rate of transillumination in the nodule. χ2 test statistical analysis of relevant data. Results The percentages of punctate and multi-point transillumination in benign and malignant pulmonary nodules were 3%, 22%, 2% and 15%, respectively. The difference between benign and malignant nodules was significant (P <0.05) There was no significant difference in the ratio of translucent film between linear and irregular morphology (P> 0.05). Conclusions The incidence of punctate and multi-point transillumination in lung nodules is significantly different between benign and malignant nodules, which has great significance for the qualitative diagnosis of lesions.