左脊柱旁线
Linea paraspinalis sinistra
定义
左椎旁线是左肺与椎旁脂肪及软组织之间的界面。
正常影像学表现:
左椎旁线自主动脉弓垂直延伸至膈肌,位于主动脉旁线的内侧,但有时也可位于主动脉旁线的外侧。
据报道,左椎旁线出现于41%的后前位X线片中,其显示频率高于右椎旁线,这是由于左侧胸降主动脉的存在,促进了左肺与其形成切线位接触,从而产生肺-纵隔界面。
异常影像学表现:
椎旁线可因明显的纵隔脂肪堆积或骨赘而向外侧移位。轮廓异常或移位亦可提示后纵隔病变,如纵隔血肿、肿块或髓外造血。
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