Odenthal Cara, Sarikwal Anubhav
University of Queensland School of Medicine, Royal Brisbane Clinical School, Queensland, Australia.
J Med Imaging Radiat Oncol. 2012 Jun;56(3):247-54. doi: 10.1111/j.1754-9485.2012.02385.x. Epub 2012 May 14.
The 'scimitar sign' on plain chest radiograph is most commonly attributed to the presence of a scimitar vein, which is a variant of partial anomalous pulmonary venous drainage (PAPVD). An anomalous unilateral single pulmonary vein (AUSPV) is a very rare anomaly, albeit benign, which can also present with the scimitar sign. Despite a similar radiographic appearance, these two anomalies have very different prognostic implications. Moreover, differentiation between the two is important in the paediatric population to prevent unnecessary investigations. We present two paediatric patients who presented with the scimitar sign on plain chest radiograph, with one having PAPVD and the other having AUSPV, and provide a review of the literature on AUSPV, an anomaly which most likely shares a similar pathogenesis to the scimitar vein of PAPVD.
胸部X线平片上的“弯刀征”最常见于弯刀静脉的存在，弯刀静脉是部分性肺静脉异位引流（PAPVD）的一种变异。异常单侧单支肺静脉（AUSPV）是一种非常罕见的异常情况，尽管是良性的，但也可表现为弯刀征。尽管两者在影像学上表现相似，但这两种异常情况的预后意义却截然不同。此外，在儿科人群中区分两者对于避免不必要的检查很重要。我们报告了两名胸部X线平片上出现弯刀征的儿科患者，其中一名患有PAPVD，另一名患有AUSPV，并对AUSPV的文献进行了综述，AUSPV这种异常情况很可能与PAPVD的弯刀静脉具有相似的发病机制。
