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目的 进一步认识周围型小肺癌的CT征象 ,提高CT诊断正确率。方法 收集经手术病理证实直径≤ 3cm周围型小肺癌 63例 ,术前均行螺旋平扫。其中 2 8例加做了高分辨扫描 ,41例做了增强扫描。重点对病灶的形态、边缘征象、内部结构及增强程度进行总结分析。结果 63例小肺癌中 ,具有深、浅分叶征 57例 ,毛刺征 56例 ,胸膜凹陷征 48例 ,血管束征 36例 ,小泡征 1 5例 ,空气支气管征 6例。 41例增强病例中 34例CT值增幅 >30HU。结论 CT显示有 3种边缘征象以上的肺部外围型结节应高度怀疑周围型肺癌 ;增强扫描对鉴别结节的良恶性很有帮助
Objective To further understand the CT signs of peripheral small lung cancer and improve the diagnostic accuracy of CT. Methods Sixty-three cases of peripheral small lung cancer with a diameter of ≤ 3 cm confirmed by surgery and pathology were collected. All patients underwent helical plain scanning. Among them, 28 patients underwent high-resolution scan and 41 patients underwent enhanced scan. Focus on the lesion morphology, marginal signs, internal structure and enhance the degree of summary analysis. Results In 63 cases of small lung cancer, there were 57 cases of deep and shallow lobes sign, 56 cases of burr sign, 48 cases of pleural indentation, 36 cases of vascular bundle sign, 15 cases of vesicle sign and 6 cases of air bronchus sign. In 41 cases of enhancement, the CT value of 34 cases increased> 30HU. Conclusions CT showed that peripheral pulmonary nodules with three types of marginal signs above should be highly suspected for peripheral lung cancer. Enhanced scan is helpful in differentiating benign and malignant nodules