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Mediastinoscopy with biopsy

Mediastinoscopy with biopsy is a procedure in which a lighted instrument (mediastinoscope) is inserted in the space in the chest between the lungs (mediastinum). Tissue is taken (biopsy) from any unusual growth or lymph nodes.

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 cut and gently passed 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.

A chest x-ray will often be taken at the end of the procedure.

The procedure takes about 60 - 90 minutes.

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 asleep during the procedure. There will be some tenderness at the site of the procedure afterward. You may have a sore throat.

Most people can leave the hospital the next morning.

In most cases, the result of the biopsy is ready in 5 - 7 days.

Why the Test is Performed

This procedure is done to look at and then biopsy lymph nodes or any other abnormal growths 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 (tuberculosis,¬†sarcoidosis)¬†and autoimmune disorders .

Normal Results

Biopsies of lymph node tissues are normal and do not show signs of cancer or infection.

What Abnormal Results Mean

Abnormal findings may indicate:

Risks

There is a risk of puncturing the esophagus, trachea, or blood vessels. In some cases, this can lead to bleeding that can be life threatening.

References

Park DR, Valliares 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.

Putnam JB Jr. Lung, chest wall, pleura, and mediastinum. In: Townsend CM Jr, Beauchamp RD, Evers BM, Mattox KL, eds. Sabiston Textbook of Surgery. 19th ed. Philadelphia, PA: Saunders Elsevier; 2012:chap 58.

Gamliel Z. Surgical staging for non-small cell lung cancer. Surg Oncol Clin N Am. 2011;20(4):691-700.

Lerut T, De Leyn P, Coosemans W, Decaluwe H, Decker G, Nafteux P, et al. Cervical videomediastinoscopy. Thorac Surg Clin. 2010;20(2):195-206.

Updated: 6/2/2014

Norman S. Kato, MD, Surgeon with the Cardiac Care Medical Group, Encino, CA. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Isla Ogilvie, PhD, and the A.D.A.M. Editorial team.


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