 | the
anterior mediastinum
by the clinician is the anterior and middle mediastina combined and it
extends into the superior mediastinum anterior to the plane of the
anterior surface of the trachea. |
 | the
middle mediastinum
includes the posterior mediastinum and the part of the superior
mediastinum posterior to a plane anterior to the trachea |
 | the
posterior mediastinum
includes the bodies of the vertebrae which includes the paravertebral
space and thus includes the sympathetic chains on each side. This is the
region that neurogenic tumors might occur. |