Definition: the region below a horizontal plane transecting approximately the T4–5 intervertebral disc posteriorly and the sternal angle anteriorly, demarcating the inferior limit of the superior mediastinum. It is subdivided into three regions: middle, anterior, and posterior.
Synonym(s): mediastinum inferiusTA
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© Copyright 2018 Wolters Kluwer. All Rights Reserved. Review date: Sep 19, 2016.