原发性气管支气管腺样囊性癌CT影像表现

CT Manifestations of Primary Tracheobronchial Adenoid Cystic Carcinoma

摘要: 目的：探讨原发性气管支气管腺样囊性癌的CT表现，提高术前诊断率。方法：回顾性分析12例经病理证实的原发性TACC CT影像资料，其中4个CT平扫加增强，1个CT平扫加CT增强加PET-CT，4个仅做了CT增强，2个仅做了CT平扫，1个CT平扫加PET-CT。结果：2个气管颈段；2个位于气管胸段；1个位于气管分叉；1例位于主支气管远端，累及隆突及左右支气管；2个位于左主支气管；1个位于中间支气管；2个位于左肺上叶支气管；1个位于右肺上叶支气管。CT表现：5例呈腔内宽基底型；2例呈管壁浸润型；5例呈腔内外生长型。结论：原发性TACC发病率低，临床表现无明显特异性，CT表现具有特征性诊断，主要依靠病理组织学，经手术治疗者预后较好。

Abstract: Objective: To explore the CT findings of primary tracheobronchial adenoid cystic carcinoma to im-prove the preoperative diagnosis rate. Methods: A retrospective analysis of 12 pathologically con-firmed primary TACC CT imaging data was performed, including 4 CT non-contrast scan plus en-hancement, 1 CT non-contrast scan plus CT enhancement plus PET-CT, 4 CT enhancement only, 2 CT non-contrast scanning, and 1 CT non-contrast scan plus PET-CT. Results: 2 tracheal neck segments; 2 located in the tracheothoracic segment; 1 located at the bifurcation of the trachea; one case was located at the distal end of the main bronchi, involving the carina and left and right bronchi; 2 lo-cated in the left main bronchi; 1 located in the middle bronchi; 2 located in the bronchi of the upper lobe of the left lung; 1 located in the bronchi of the upper lobe of the right lung. CT manifestations: Five cases were intraluminal with wide substrate type; two cases were infiltrated by the tube wall; five cases showed intraluminal and extravascular growth. Conclusions: The incidence of primary TACC is low, the clinical manifestations are not obvious, the CT manifestations have a characteristic diagnosis, mainly relying on pathological histology, and the prognosis of patients treated by surgery is good.