Assertion: mediastinum's vessel | /r/RelatedTo | the heart
Facets:
value: in the middle
type: LOCATION
Source sentences:
text: Structures in the superior mediastinum are: the thymus (or its remains) anteriorly; the great vessels related to the heart in the middle; and the oesophagus , trachea and thoracic duct posteriorly.
text: The superior mediastinum contains the thymus, great vessels related to the heart, the trachea, and the esophagus.