Which of the following structure is present over the mediastinal surface of right lung:

Ans. A Azygos veinRef: Gray's Anatomy 41st ed. P 955Mediastinal Surface of Right LungOn the mediastinal surface of the right lung, you find these structures:* Azygos vein and its arch (posterior and over the root of the lung).* Vagus nerve posterior to the root of the lung.* Esophagus posterior to the root.* Phrenic nerve anterior to the root of the lung.* Cardiac impression: Related to right atrium.* Below hilum and in front of pulmonary ligament: Groove for IVC.