A 46-year-old patient comes to doctor's OPD with complains of chest pain and headache. His computed tomography (CT) scan reveals a tumor located just superior to the root of the right lung. Blood flow in which of the following veins is most likely blocked by this tumor?
The azygos vein arches over the root of the right lung and empties into the SVC. Other veins do not pass over the root of the right lung.
Hemiazygos vein
Arch of the azygos vein
Right subclan vein
Right brachiocephalic vein
Thorax- wall and Bronchopulmonary segment