体检人群中气管、支气管憩室的CT表现及随访变化

CT features and follow-up observation of tracheobronchial diverticulum in the people who received health examination

目的:探讨胸部体检人群中气管、支气管憩室(tracheobronchial diverticulum,TBD)的CT表现和随访变化,提高对本病的认识。方法:选取2021年1月—3月于山东电力中心医院行胸部CT健康查体(1426名)诊断为TBD的患者119例,对其影像表现和随访变化进行回顾性分析。结果:1426例查体者中共有119例诊断为TBD,总检出率8.35%。气管憩室发生于气管右后(T1-3水平,6~9点方向)最为常见,占总数的95.40%;支气管憩室发生于气管隆嵴下最多,占85.11%。TBD与气管及支气管之间的开口显示率为65.75%。119例患者中80例有随访结果。1例体积减小后又增大;1例体积增大、分隔增多;3例体积减小;4例表现为形态略有改变。结论:CT能准确清晰显示TBD的数目、部位、大小、形态、开口、结构和随访变化情况。了解TBD的影像特征有利于提高影像医师对其诊断正确率。

Objective To explore the CT features and follow-up changes of tracheobronchial diverticulum(TBD)in the people who received health examination,in order to improve the understanding of this disease entity.Methods A total of 119 patients diagnosed with TBD who underwent chest CT health examination(1426 patients)in Shandong Electric-Power Central Hospital from January to March 2021 were selected,the CT features and follow-up changes were analyzed retrospectively.Results 119 cases were diagnosed with TBD in 1426 physical examination cases(the detection rate was 8.35%).Tracheal diverticulum always located at the right posterolateral aspect of trachea(T1 to T3 levels,6 to 9 o'clock direction),95.4%of the total;Bronchial diverticulum mostly situated under the tracheal carina,accounting for 85.11%.The detection rate of the opening between TBD and trachea/bronchi was 65.75%.80 of 119 patients had follow-up results.In 1 case,the volume decreased and then increased.In 1 case,the volume and the septa increased.The volume of 3 cases decreased;4 cases showed slight morphological changes.Conclusion Computed tomography can observe some characteristics of TBD,such as the number,location,size,shape,opening,structure and changes during the follow-up.Understanding the CT image features of TBD is helpful to improve the diagnostic accuracy of radiologists.