AJCC/ATS胸内淋巴结影像分区中某些重要界线的确定——断层解剖与CT、MRI对照研究(英文)

Definition of boundary lines with diagnostic importance for lung cancer staging,demonstrated with CT and MRI and based on AJCC/ATS regional lymph node classification:A comparative study with cross-sectional anatomy

目的 :确定ATS/AJCC胸内淋巴结CT、MRI分区中一些重要界线。方法 :在 5具尸体上观察胸内淋巴结分布 ,用胸部横断层标本 (4套 )与CT(5 0例 )、MRI(2 0例 )图像对照观察。确定了 2条辅助线和 2个影像解剖标志来区分 4、5、6及 1 0区淋巴结。结果 :在主动脉弓上缘至肺动脉干区段 ,经升主动脉断面圆心的冠状线分开 5区与 6区 ,升、降主动脉断面圆心间连线分开 5区与 4L(ATS、AJCC)或 1 0L区 (ATS)。左肺动脉分开 5区与 4L或 (AJCC) 1 0L区 (ATS)。奇静脉弓分开 4R区与 1 0R区 (ATS)或 4R上、下组 (AJCC)。结论 :文中设计的组间界线使ATS和AJCC分区系统易于使用 。

Objective:To define several boundary lines with diagnostic significance for lung cancer staging,demonstrated with CT and MR imaging and according to ATS/AJCC regional lymph nodal classification.Methods:In 5 cadavers,intrathoracic lymph nodes were observed and classified using ATS and AJCC systems.Stations 4,5,6 and 10 were identified with 2 assisted lines and 2 imaging based anatomic landmarks by comparing CT and MR images with 4 series of cross sectional specimens.Results:In the segment from the superior border of aortic arch to the main pulmonary artery trunk,a coronal line through the sectional center of the ascending aorta divided Stations 5 and 6.The line between the centers of ascending and descending aorta separated Station 5 from Station 4 L(ATS,AJCC),or 10L(ATS) on axial images.The left pulmonary artery separated Station 5 from 10L(ATS),or 4L(AJCC) and the arch of azygos vein separated Station 4R from 10R(ATS),or superior and inferior subset of 4R(AJCC).Conclusions:The boundary lines between the stations designed in our study facilitate the application of ATS and AJCC classification system,which is helpful to lung cancer staging with CT and MR imaging.