60例3厘米以下肺内球形病灶瘤─肺界面CT─病理对照分析

本文复习了经手术病理证实的直径≤３ｃｍ的肺内孤立性球形病灶６０例（肺癌４２例、良性结节１８例）的ＣＴ像。ＣＴ像显示结节边缘粗糙者小肺癌占８１％，良性结节占２８％。结节主要ＣＴ像层面上多毛刺（多于６根）结节小肺癌占７１％，良性结节仅占１１％。ＣＴ像见结节边缘有锯齿征９例，病理证实均为肺癌，此征与癌灶边缘不等速浸润生长有关。ＣＴ－病理对照结果显示锯齿征是诊断周围型小肺癌很重要的一个ＣＴ征象，ＣＴ像上结节边缘光滑程度及毛刺数的多少有助于肺周围球形小病灶的良、恶性鉴别诊断。

CT-Pathologic Correlation of Tumor-Lung Interface in Solitary Pulmonary Nodules Less than 3 cm(Analysis of 60 Cases )

The authors reviewed CT images of 60 solitary pulmonary nodules(42 lung cancers and 18 benign nodules) proved by pathology.On thin-section CT images, ill-defined edge of the lung cancers were found in 32 (81%) and that of the benign nodules were in 5(28%). The number of the spiculations more than 6 in the lung cancers was found in 30(71%) and that of the benign nodules was less (11%) on CT images. Serrated signs were only seen in 9 lung cancers because of the unequal development and carcinomatous infiltration in pathology. Comparison of CT images with pathologic data suggests that the serrated sign of nodule is a valuable sign in diagnosis of small peripheral lung cancer on CT image. The edge feature and number of spiculation of nodule are helpful to differential diagnosis between the malignancy and benignancy of small solitary lung nodules in CT images.