mediastinoscopy
(MEE-dee-a-stin-AHS-ko-pee)
A procedure in which a tube is inserted into the chest, through an incision above the breastbone, to view the organs in the area between the lungs and nearby lymph nodes. The procedure is usually performed to get a tissue sample from the lymph nodes on the right side of the chest.
Audio contributed by: Marisa Weiss, M.D.