How the test is performed: This procedure is done in the hospital. You will be given general anesthesia so that you are asleep and do not feel any pain. A tube (endotracheal tube) is placed in your nose or mouth to help you breathe.
A small surgical cut is made in the neck. A device called a mediastinoscope is inserted through this incision into the mid-part of the chest.
Tissue samples are taken of the lymph nodes around the airways. The scope is then removed and the surgical cut is closed with stitches.
How to prepare for the test: You must sign an informed consent form. You will not be able to have food or fluid for 8 hours before the test.
How the test will feel: You will be unconscious during the procedure. There will be some tenderness at the site of the procedure afterward. You may have a sore throat after the procedure.
Why the test is performed: This procedure is done to look at and then biopsy lymph nodes or any other abnormal growth in the front part of the mediastinum, near your chest wall.
- The most common reason is to see if lung cancer (or another cancer) has spread to these lymph nodes. This is called staging.
- This procedure is also done for certain infections and autoimmune disorders .
Normal Values: Biopsies of lymph node tissues are normal and do not show signs of cancer or infection.
What abnormal results mean: Abnormal findings may indicate:
What the risks are: There is a risk of puncturing the esophagus, trachea, or blood vessels. In some circumstances, this can lead to potentially fatal bleeding.
References: Park DR, Vallières E. Tumors and cysts of the mediastinum. In: Mason RJ, Broaddus VC, Martin TR, et al, eds. Murray and Nadel's Textbook of Respiratory Medicine. 5th ed. Philadelphia, Pa: Saunders Elsevier;2010:chap 76.
