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.

• 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。