Don't gamble with medical record numbers. Each label lists the patient's name, the medical record number, the tests to be performed, the type of container required, any special instructions, and the bar code that identifies the specimen.
Mediastinoscopy is a surgical procedure to look at the inside of the upper chest between and in front of the lungs (mediastinum). During a mediastinoscopy, a small cut (incision) is made in the neck just above the breastbone or on the left side of the chest next to the breastbone. Then a thin scope (mediastinoscope) is inserted through the opening.
The mediastinum lies within the thorax and is enclosed on the right and left by pleurae. It is surrounded by the chest wall in front, the lungs to the sides and the spine at the back. It extends from the sternum in front to the vertebral column behind, and contains all the organs of the thorax except the lungs.