左肺动脉吊带伴随气管畸形的多层螺旋CT诊断价值

Multislice spiral CT of left pulmonary artery sling with tracheobronchial anomaly

目的 评价MSCT在诊断左肺动脉吊带及伴随气管畸形中的价值.方法 回顾性分析MSCT诊断的肺动脉吊带伴随气管畸形及气管狭窄患儿9例.结果 根据Wells分型,分为2种主型和2种亚型,其中1A型2例,1B型3例,2A型2例,2B型2例.9例患儿全部存在不同程度的气管支气管狭窄.4例（1型）局限或短段气管支气管狭窄,5例（1型1例,2型4例）长段气管狭窄或支气管狭窄.结论 MSCT成为同时显示左肺动脉吊带畸形和伴随气管畸形的最佳成像方法.Wells分型对制定手术方案非常有帮助.

Objective To discuss the value of MSCT in diagnosis of left pulmonary artery sling （LPAS） with tracheobronchial anomaly.Methods MSCT was performed in 9 children with LPAS and tracheobronchial anomalies,CT findings were analyzed retrospectively. Results According to the Wells classification of LPAS,which includes two main types and two subtypes,there were 2 patients of type 1A,3 patients of type 1 B,2 patients of type 2A and 2 patients of type 2B.All of children had tracheobronchial stenosis.Local tracheobronchial stenosis was found in 4 patients （ all were type 1 ） and long tracheobronchial stenosis in 5 patients （ 1 patient with type 1 and 4 patients with type 2）.Conclusions MSCT is an ideal imaging modality for simultaneously identifying LPAS and associated tracheobronchial anomalies.The Wells classification is very useful for operation planning.