Fig. 1
From: An abnormal course of the interazygos vein: a case report
Photograph showing variations of the posterior mediastinum. a Superior vena cava vein. b Azygos vein. c Preaortic interazygos vein that was a direct continuation of the accessory hemiazygos vein. d Descending aorta. e Preaortic interazygos vein that was a direct continuation of the hemiazygos vein. f Thoracic duct. g Sympathetic trunk. h Greater splanchnic nerve. i Lesser splanchnic nerve. j Least splanchnic nerve