Gamma Knife stereotactic radiosurgery unit A biopsy of the nerve may be needed in people who have certain conditions, such as progressive peripheral neuropathy and enlarged nerves that mimic nerve tumors. Sometimes a biopsy is the only way to determine whether a tumor is cancerous. Depending on the tumor's size and location, you may need to have medicine that numbs an area of the body, called local anesthesia, or medicine that puts you to sleep, called general anesthesia, during the biopsy. A small sample of cells from the tumor is removed and analyzed. If you have a nerve tumor, you may need a biopsy. It measures how fast the nerves carry electrical signals to the muscles. An instrument records the electrical activity in the muscle as they're moved. For this test, small needles are placed in the muscles. A CT scan can help your provider determine how the tumor may be affecting you. A computer uses the image to make a detailed view of the peripheral nerve tumor. A CT scanner rotates around the body to take a series of images. This scan uses a magnet and radio waves to produce a detailed 3D view of nerves and tissue. Several tests may help pinpoint the cause of your symptoms. You may undergo a general physical exam and a neurological exam. To diagnose a peripheral nerve tumor, your health care provider will ask about your symptoms and medical history.
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