Figure 1. Descending thoracic aorta, with a posteriorly located echolucent lumen

From

Dilated Accessory Hemiazygos Vein Mimicking Aortic Dissection in Setting of Absent Left Brachiocephalic Vein

Krunal H Patel, Vaibhavi Uppin, Harshith Chandrakumar, Yuvraj Singh Chowdhury, Jonathan Ramalho, Basil Elamir, Loius Sacicciioli, Harjinder Gill, Sarah Hennis, Samy I. McFarlane

American Journal of Medical Case Reports. 2021, 9(2), 125-130 doi:10.12691/ajmcr-9-2-7