NCI Dictionary of Cancer Terms
The NCI Dictionary of Cancer Terms features 8,048 terms related to cancer and medicine.
- listen (MEE-dee-uh-STY-noh-skope)
A thin, tube-like instrument used to examine the tissues and lymph nodes in the area between the lungs. These tissues include the heart and its large blood vessels, trachea, esophagus, and bronchi. The mediastinoscope has a light and a lens for viewing and may also have a tool to remove tissue. It is inserted into the chest through a cut above the breastbone.