肺隔离症多层螺旋CT影像学特点及临床特征

MSCT imaging characteristics and clinical characteristics of pulmonary isolation disease

目的:探讨肺隔离症多层螺旋CT(Multislice spiral CT,MSCT)影像学特点、相关病理及临床特征,评价MSCT在术前评估、识别供血动脉预防术中出血的作用。方法:回顾性分析我院2018年10月至2020年10月收治的12例肺隔离症患者的相关资料,总结肺隔离症在MSCT影像学图像特征,对照分析其病理及临床特征。结果:在12例患者病变中,9例患者病变位于左肺下叶基底段,3例患者病变位于右下肺后基底段。CT平扫发现软组织密度伴囊变者10例,斑片状混杂密度影者2例,病变内见钙化者3例;增强扫描病灶囊性部分无强化,实性部分明显强化。CTA显示病变的供血动脉,由胸主动脉发出供血动脉8例,其中1例有3支供血动脉,由腹主动脉发出供血动脉1例,由腹腔干发出供血动脉3例,供血动脉管径2~10 mm。在本组病例中MSCT对12例肺隔离症患者的诊断准确率为91.7%(11/12)。结论:肺隔离症以支气管肺组织发育不良、异常体循环供血为主要病理特征,MSCT能对病灶形态、位置、大小、供血动脉及引流静脉等进行准确显示,为临床治疗提供依据。同时,MSCT在术前评估、识别供血动脉预防术中出血中也有重要价值。

Objective:To explore the imaging characteristics,related pathology and clinical characteristics of pulmonary isolation,and to evaluate the role of MSCT in preoperative evaluation and identification of blood supply artery prevention of bleeding.Methods:Retrospective analysis of 12 cases with lung isolation from October 2018 to October 2020 was made,the imaging characteristics of lung isolation in MSCT summarized,and the pathological and clinical manifesta⁃tions were analyzed.Results:In 12 cases,9 lesions were located in the left lower lobe,3 in the right lower lung,10 soft tissue density with cystic lesions,2 with plaque mixed density,and 3 calcification in the lesion.In the enhanced scan,the cystic part of the lesion was not strengthened,and the solid part was significantly strengthened.CTA showed diseased blood supply artery,8 cases from chest aorta,1 with three blood supply arteries,1 blood supply artery from abdominal artery,3 cases from abdominal dry blood supply artery,blood supply artery diameter was 2~10 mm.The diagnostic com⁃pliance rate of MSCT for 12 pulmonary isolation patients was 91.7%(11/12).Conclusion:The pulmonary isolation takes bronchial pulmonary dysplasia and abnormal blood circulation as the main pathological characteristics.MSCT can accurately show the lesion morphology,location,size,blood supply artery and drainage vein,and provide the basis for clinical treatment.At the same time,MSCT also has important value in preoperative evaluation and identification of blood supply artery preventive bleeding.