mediastinum

https://doi.org/10.1351/goldbook.10924

Region in the middle of the thorax between the two lungs, containing the regional vessels, trachea, esophagus, bronchi, lymph nodes, and heart.

Source:
PAC, 2016, 88, 713. (Glossary of terms used in developmental and reproductive toxicology (IUPAC Recommendations 2016)) on page 776 [Terms] [Paper]