胸腔出入口区CT研究

目的：探讨胸腔出入口区的正常CT解剖和CT对该区病变的诊断及鉴别诊断价值。方法：回顾性分析经病理及临床证实的117例胸腔出入口区病变的CT表现，对50例正常对照组在CT上分为5个解剖区：1区（甲状腺区）；2区（甲状腺内侧区）；3区（甲状腺外侧区）；4区（甲状腺后区）；5区（甲状腺前区）。结果：在117例中，1区11例（9．40％），2区8例（6．84％），3区72例（61．54％），4区1例（0．85％），5区3例（2．56％），跨1，3，5区15例（12．8％），跨1，2，3区7例（5．98％）。病变主要分布在3区，其中以淋巴结病变最为多见（55例）；甲状腺病变（33例）主要分布在1区和跨区生长。结论：在CT上对胸腔出入口区合理的划分5个解剖区，有利于病变的定位和定性1诊断，具有重要的临床应用价值。

CT studies of the thoracic outlet and inlet

Objectives:The anatomys of the thoracic outlet and inlet and the valuation of CT diagnosis and differential diagnosis on abnormal conditions were studied. Methods: CT imaging of 117 cases proved pathologically and clinically in the zones were analysized, retrospectivelly. Control group was 50 normal cases divided into 5 anatomic regions: 1 region (thyroid zone), 2 region(interior thyroid), 3 region (lateral thyroid), 4 region (posterior thyroid), 5 region (anterior thyroid). Results: In 117 cases, 1 region 11 cases (9.40%), 2 region 8 cases (6.84%), 3 region 72 cases (61.54%), 4 region 1 case (0.85%), 5 region 3 cases (2.56%), transregional (1, 3, 5) 15 cases (12.8%), transregional(1, 2, 3) 7 cases (5.98%). The disorders were mainly distributed in 3 region in which lymphatic node abnormalities were the most of them (55 cases). The 33 cases of abnormal thyroid gland were mainly in the 1 zone and involved with other zones. Conclusions: On CT anatomic regions of the thoracic outlet and inlet divided into 5 zones were very useful for localization and definition of diagnosis, which have the important valuation of clinical uses.