材料和方法：分析经手术病理证实的46例SPLC及40例良性结节的空泡征、细支气管充气征和空洞的CT表现。
Materials and Methods: The ct manifestation of vacuole sign, air-bronchogram and cavity of 46 cases with pathologically proved SPLC and 40 cases with benign nodules were analyzed retrospectively.
癌性支气管充气征、空泡征和结节征为主要内部表现；
Carcinous bronchiologram, vacuole and nodule sign were major internal features.
③结果 周围型肺腺癌内部呈空泡征或支气管充气征31例（40．3％），其中26例为中高分化的腺癌。
Results The basic CT features were as follows: vacuole or air bronchus-charging sign was found in 31 cases (40.3%), in which, 26 were moderately and highly differentiated;
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