mediastinal branches

me·di·as·ti·nal branch·es

branches distributed to the mediastinum.

mediastinal arteries

Small branches of the thoracic aorta that supply nerves, pleura, lymph nodes and other tissue in the posterior mediastinum.
References in periodicals archive ?
It contains a quantity of loose areolar tissue, some lymphatic vessels which ascend from the convex surface of the liver, two or three anterior mediastinal lymph glands, and the small mediastinal branches of the internal mammary artery.