Tumor are graded but only after a biopsy. About the only thing known about cause of brain tumor is that you don t catch them. Some time certain occupation experience higher incidences of brain tumors. There is two types of tumor ones that occur in the brain its self , others that migrate to the brain from other parts of the body. So if lung cancer moves to the brain the cells will still be lung cancer cells.
Symptoms sometime come on slowly.
Morning headaches that clear up later, seizures, weakness in limbs, changes in vision, memory problems or personality changes, difficulty in speech are some of the early warning symptoms. It will take some tests and a visit to your doctor to find out the problem. Usually you will need a Cat Scan or MRI to get a detail picture of what is going on in brain. The doctor may also Order a skull x-ray, a brain scan, an angiogram, myleogram or other tests. There are only a few treatments available for brain tumors today.