Brain tumor
A brain tumor occurs when a group of cells within the brain grow out of control, creating a mass. There are two main types of : (cancerous) tumors and (non-cancerous) tumors. These can be further classified as primary tumors, which start within the brain, and secondary tumors, which most commonly have spread from tumors located outside the brain, known as brain metastasis tumors. All types of brain tumors may produce symptoms that vary depending on the size of the tumor and the part of the brain that is involved. Where symptoms exist, they may include headaches, , problems with vision, vomiting and mental changes. Other symptoms may include difficulty walking, speaking, with sensations, or unconsciousness.
Underlined words are explained — tap any of them.
Symptoms — what it feels like
- ·Vary depending on the part of the brain involved, headaches, , problem with vision, vomiting, mental changes
Causes — why it happens
- ·Usually unknown
How it's found
- ·Computed tomography, magnetic resonance ,
Treatment
- ·, therapy,
Outlook
- ·Average five-year survival rate 33% (US)