肺隔离症的CT表现(附9例分析)

CT Findings of Pulmonary Sequestration: An Analysis of 9 Cases

目的 分析肺隔离症的CT表现 ,提高对本病的认识。资料与方法 搜集经手术病理确诊的肺隔离症 9例 ,全部病例均行CT平扫及薄层增强扫描。结果 9例均位于肺下叶后基底段 ,病变呈囊实性 5例 ,囊性及实性各 2例 ,9例均在薄层增强扫描上显示异常体循环供血血管。结论 肺隔离症主要表现为肺下叶后基底段的囊性、实性或囊实性的软组织影 ,CT增强扫描发现来自体循环的异常供血动脉可以确诊。

Objective To analyze CT manifestations of pulmonary sequestration and to make a further understanding of the disease. Materials and Methods Nine cases with pathologically proved pulmonary sequestration were collected. Both plain and thin-slice enhanced CT scanning were performed in all cases. CT features were observed and analyzed.Results In all 9 cases the lesion was located in the posterior basal segment of the lower lobe. The lesion was cystic-solid in 5, cystic in 2 and solid in 2 cases. Abnormal systemic feeding arteries were revealed on thin-slice enhanced scans. Conclusion The main CT sign of the pulmonary sequestration is a soft-tissue shadow, which is located at the posterior basal segment of the lower lobe and presented as a cystic, or solid, or cystic-solid mass. The diagnosis can be confirmed when systemic feeding arteries are demonstrated on enhanced CT scans. Thin-slice enhanced CT scanning can improve the displaying rate of the abnormal feeding arteries.