Learn about this type of tumor that can occur in the brain or spinal cord.
Oligodendroglioma is a growth of cells that starts in the brain. The growth of cells, called a tumor, begins in cells called oligodendrocytes. These cells make a substance that protects nerve cells and helps with the flow of electrical signals in the brain and spinal cord.
Oligodendroglioma is most common in adults, but it can happen at any age. Symptoms include seizures, headaches, and weakness or disability in a certain part of the body. Where this happens in the body depends on which parts of the brain are affected by the tumor.
Treatment is with surgery, when possible. Sometimes surgery can't be done if the tumor is in a part of the brain that makes it hard to access with surgical tools. Other treatments may be recommended if the tumor can't be removed or if it's likely to come back after surgery.
Tests and procedures used to diagnose oligodendroglioma include:
Removing a sample of tissue for testing. A biopsy is a procedure to remove a small sample of tissue from the tumor for testing. When possible, the sample is removed during surgery to remove the tumor. If the tumor can't be removed with surgery, a sample might be collected with a needle. Which method is used depends on your situation and the location of the tumor.
The tissue sample goes to a lab for testing. Tests can show what types of cells are involved. Special tests can show detailed information about the tumor cells. For example, a test may look at the changes in the tumor cells' genetic material, called DNA. The results tell your health care team about your prognosis. Your care team uses this information to create a treatment plan.
Oligodendroglioma treatments include:
Surgery to remove the tumor. The goal of surgery is to remove as much of the oligodendroglioma as possible. The brain surgeon, who is also called a neurosurgeon, works to remove the tumor without harming healthy brain tissue. One way to do this is called awake brain surgery. During this type of surgery, you're awakened from a sleep-like state. The surgeon might ask questions and monitor the activity in your brain as you reply. This helps show the important parts of the brain so the surgeon can avoid them.
Other treatments may be needed after surgery. Other treatments might be recommended if any tumor cells remain or if there's an increased risk that the tumor will come back.
Radiation therapy. Radiation therapy uses powerful energy beams to kill tumor cells. The energy can come from X-rays, protons and other sources. During radiation therapy, you lie on a table while a machine moves around you. The machine sends beams to exact points in your brain.
Radiation therapy is sometimes used after surgery and may be combined with chemotherapy.