noun
definition
The region in mammals between the pleural sacs, containing the heart and all of the thoracic viscera except the lungs.
Examples of mediastinum in a Sentence
There is a small soft tissue density closely applied to the upper mediastinum on the right, in the superior sulcus.
Loss of weight Shadow present in the superior mediastinum, extending to both sides of the outline of the vertebral column.
Ectopic parathyroid tissue can occur, from cricoid to anterior mediastinum.
He shows no inconsiderable knowledge of anatomy in his remarkable description of inflammation and abscess of the mediastinum in his own person, and its diagnosis from common pleuritis as well as from abscess and dropsy of the pericardium.