Linea paratrachealis sinistra
Linea paratrachealis sinistra
定义
与右气管旁条纹类似，左气管旁条纹由气管壁、数量不等的纵隔脂肪及气管旁胸膜构成。气管内的气体及充气的左肺上叶勾勒出其间软组织的轮廓。
正常影像学表现：
左气管旁条纹向上延伸，自主动脉弓起始，与来自左锁骨下动脉的反折相汇合。
左气管旁条纹可见于21%–31%的后前位胸部X线片，其显示率低于右气管旁条纹，原因在于左肺与左颈总动脉近段（前方）或左锁骨下动脉（后方）的接触可能遮蔽该条纹（即被动脉旁线所掩盖）。
异常影像学表现：
轮廓异常或增宽可由胸腔积液或胸膜增厚、气管旁淋巴结病、血肿或肿瘤引起。
參考資料
Gibbs JM, Chandrasekhar CA, Ferguson EC, Oldham SA. Lines and stripes: where did they go?--From conventional radiography to CT. Radiographics. 2007 Jan-Feb;27(1):33-48. doi: 10.1148/rg.271065073. PMID: 17234997.
Marano R, Liguori C, Savino G, Merlino B, Natale L, Bonomo L. Cardiac silhouette findings and mediastinal lines and stripes: radiograph and CT scan correlation. Chest. 2011 May;139(5):1186-1196. doi: 10.1378/chest.10-0660. PMID: 21540217.
Cardiac silhouette findings and mediastinal lines and stripes: X-ray and computed tomography correlation R. Marano, G. Savino, C. Liguori, A. Meduri, L. Natale, L. Bonomo; Rome/IT CR-222 poster ECR 2009
Mediastinal lines, stripes and interfaces on PA chest radiograph with CT correlations - N. Bystrická, H. Poláková, J. Sykora; Bratislava/SKC-0442ECR 2013 10.1594/ecr2013/C-04
