Na D G, Han M H, Kim K H, Chang K H, Yeon K M
Department of Diagnostic Radiology, Seoul National University College of Medicine, Seoul National University Hospital, Korea.
J Comput Assist Tomogr. 1995 Jul-Aug;19(4):559-63. doi: 10.1097/00004728-199507000-00010.
Our goal was to describe the CT characteristics of adenoid cystic carcinomas of the trachea mimicking thyroid tumors.
Computed tomography of four patients with pathologically proved adenoid cystic carcinomas extending into the thyroid gland was retrospectively reviewed. One case was also examined with MR.
The masses encircling the trachea and circumferential thickening of the tracheal wall were demonstrated in all four cases. The longitudinal extent of the tracheal wall thickening was also demonstrated in all cases. The tumors had a broad base on the trachea and convex margin on the thyroid gland. They were all homogeneous, generally smoothly marginated, and isoattenuating on postcontrast CT scans.
Adenoid cystic carcinomas were usually seen on CT scans as homogeneous masses encircling the posterolateral trachea with thickening of the tracheal wall in the transverse and longitudinal planes. These CT characteristics may be helpful in the differential diagnosis of adenoid cystic carcinomas mimicking thyroid tumors.
我们的目标是描述模仿甲状腺肿瘤的气管腺样囊性癌的CT特征。
回顾性分析4例经病理证实的腺样囊性癌侵犯甲状腺的患者的计算机断层扫描结果。其中1例还进行了磁共振成像检查。
所有4例均显示肿块环绕气管及气管壁环形增厚。所有病例均显示气管壁增厚的纵向范围。肿瘤在气管上有宽基底，在甲状腺上有凸缘。它们均为均匀密度，边界通常光滑，增强CT扫描上呈等密度。
腺样囊性癌在CT扫描上通常表现为环绕气管后外侧的均匀肿块，气管壁在横断面上和纵向上均增厚。这些CT特征可能有助于鉴别模仿甲状腺肿瘤的腺样囊性癌。
