Arms and legs may become numb and lose sensation. Many bodily functions may be affected. Additional damage to the brain can occur since the skull is solid and can't "give" as the tumor grows. Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view.
It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs. The mutations tell the cells to grow and divide rapidly and to continue living when healthy cells would die.
The result is a mass of abnormal cells, which forms a tumor. In adults, primary brain tumors are much less common than are secondary brain tumors, in which cancer begins elsewhere and spreads to the brain. Many different types of primary brain tumors exist. Each gets its name from the type of cells involved.
Examples include:. Secondary metastatic brain tumors are tumors that result from cancer that starts elsewhere in your body and then spreads metastasizes to your brain. Secondary brain tumors most often occur in people who have a history of cancer. Rarely, a metastatic brain tumor may be the first sign of cancer that began elsewhere in your body. In most people with primary brain tumors, the cause of the tumor isn't clear. But doctors have identified some factors that may increase your risk of a brain tumor.
Brain tumor care at Mayo Clinic. Mayo Clinic does not endorse companies or products. Advertising revenue supports our not-for-profit mission. This content does not have an English version. This content does not have an Arabic version. Overview Brain tumor Open pop-up dialog box Close. Brain tumor A brain tumor can form in the brain cells as shown , or it can begin elsewhere and spread to the brain. Email address.
Thank you for subscribing You will receive the first brain tumor email in your inbox shortly, which will include information on treatment, diagnosis, surgery and how brain cancer teams at Mayo Clinic approach personalized care. You can also be exposed to radiation from nuclear fallout. The nuclear power plant incidents in Fukushima and Chernobyl are examples of how people can be exposed to ionizing radiation. According to the American Brain Tumor Association , people with a history of childhood chicken pox have a decreased risk of getting brain tumors.
Symptoms of brain tumors depend on the location and size of the tumor. Some tumors cause direct damage by invading brain tissue and some tumors cause pressure on the surrounding brain.
The physical exam includes a very detailed neurological examination. Your doctor will conduct a test to see if your cranial nerves are intact. These are the nerves that originate in your brain. Your doctor will look inside your eyes with an ophthalmoscope, which is an instrument that shines a light through your pupils and onto your retinas. This allows your doctor to check how your pupils react to light. When pressure increases inside the skull, changes in the optic nerve can occur.
CT scans are ways for your doctor get a more detailed scan of your body than they could with an X-ray machine. This can be done with or without contrast. Contrast is achieved in a CT scan of the head by using a special dye that helps doctors see some structures, like blood vessels, more clearly.
If you have an MRI of your head , a special dye can be used to help your doctor detect tumors. The dye travels to the arteries in your brain. It allows your doctor to see what the blood supply of the tumors looks like. This information is useful at the time of surgery.
Brain tumors can cause breaks or fractures in the bones of the skull, and specific X-rays can show if this has occurred. These X-rays can also pick up calcium deposits, which are sometimes contained within a tumor.
Calcium deposits may be in your bloodstream if your cancer has moved to your bones. A small piece of the tumor is obtained during a biopsy. A specialist called a neuropathologist will examine it. The biopsy will identify if the tumor cells are benign or malignant. It explains what tests may be needed to learn more about the cause of the symptoms.
Use the menu to choose a different section to read in this guide. General symptoms include: Headaches, which may be severe and worsen with activity or in the early morning Seizures. Loss of balance and difficulty with fine motor skills is linked with a tumor in the cerebellum. Inability to look upward can be caused by a pineal gland tumor. Types of Cancer. Brain Tumor Guide. Net Guide Brain Tumor. Medical Illustrations. Risk Factors. Symptoms and Signs. Grades and Prognostic Factors.
Types of Treatment.
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