Figure 6
From: State of the art: noninvasive imaging and management of neurovascular trauma
Anomalous origin on the right subclavian artery. Serial images from a helical CT scan of the superior mediastinum, cranial to caudal. Notice the large enhancing vascular structure posterior to the esophagus (*). On the more caudal images, a direct origin of this vessel from the aortic arch, distal to the origin of the left subclavian artery, is noted.