Mediastinoscopy
This is a test that examines the mediastinum. This area is located in the center of the chest between the lungs and contains the heart, blood vessels and lymph nodes.
Needle biopsy
For this procedure, the doctor uses a fine needle to take samples and examine the cells under a microscope. This test can be uncomfortable, but only takes a few minutes. Also, your doctor may use X-rays, CT scan or fluoroscopy to guide the needle when inserted into the tumor.
Fluoroscopy is a diagnostic procedure in which X-rays are passed through the body and then projected onto a screen, thus allowing continued to observe an image of internal body structures. You may take small tissue samples and send them to the laboratory for analysis.
