胸膜凹陷征，指肿瘤与胸膜之间的线形或幕状阴影，也可为星状阴影，系肿瘤瘤体内的瘢痕组织牵拉临近的脏层胸膜所致。
伴有胸膜增厚的胸膜凹陷征。
结论：螺旋高分辨率CT尤其是3d重建有利于周围型肺癌胸膜凹陷征的显示。
Conclusion: HHRCT, especially 3d reconstruction with surface shielding display, is helpful to show the pleural indentation in peripheral lung cancer.
而肿块大小、分叶征及胸膜凹陷征在两组之间的出现率无明显差异（ P＞ 0 ．05） 。
There were no significant difference of the incidence of lobulated sign and pleural indentation sign and the size of the mass between two groups(P>0.05).
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