增强CT扫描及后处理技术对肺隔离症的诊断价值

Value of enhanced CT scan and postprocessing techniques in diagnosing pulmonary sequestration

目的探讨增强CT扫描及其后处理技术在肺隔离症中的诊断价值。方法回顾分析18例经手术和病理证实的肺隔离症患者胸部增强CT及后处理图像。结果其中叶内型16例(89%),叶外型2例(11%);14例位于左下肺(78%),4例位于右肺(22%);实性肿块3例,囊实性肿块11例,囊性病灶1例,血管增粗及条索影3例;供血动脉2例来自腹主动脉上段,另外16例来自胸主动脉下段,其中多支供血动脉3例,单支供血动脉15例,16例引流至同侧肺静脉,1例引流至半奇静脉,1例为双重静脉引流(肺静脉、奇静脉);18例均能完整地显示异常供血动脉及引流静脉的全貌。结论增强CT扫描及其后处理技术能清晰显示病灶内异常供血动脉及引流静脉,对肺隔离症的诊断具有重要的临床应用价值,可以取代血管造影作为诊断该病的最佳检查方法。

Objective To explore the value of enhanced CT scan and postprocessing techniques in the diagnosis of pulmonary sequestration. Methods 18 patients that had been proven pulmonary sequestration by operation and pathology were retrospectively reviewed with their enhanced CT scan and postprocessing images.Results 16 patients displayed intralobar sequestration,and 2 extralobar sequestration. 14 patients had lesions in left lower lung and 4 in right lung. Solid mass was found in 3 cases,cystic solid mass in 11 cases,cystic lesion in 1 cases,thickening of blood vessels and cord shadow in 3 cases. 2 cases of feeding artery from the upper abdominal aorta,the other 16 cases from the lower thoracic aorta,including multiple arterial artery in 3cases,15 cases of single artery. 16 cases were drained to the ipsilateral pulmonary vein,1 case was drained to the half-vein,1 case was double venous drainage（ pulmonary vein,odd vein）. 18 cases can be a complete display of abnormal blood supply and drainage veins of the whole picture. Conclusion Enhanced CT scan and post-processing technology can clearly show abnormal blood supply arteries and draining veins in the lesion. It is of great clinical value in the diagnosis of pulmonary sequestration and can replace angiography as the best method to diagnose the disease.