PRIMARY BRAIN TUMORS CAN BE BENIGN OR MALIGNANT.
Benign brain tumors :
Benign brain tumors do not contain cancerous cells and usually grow slowly with no tendency to invade the tissues around it or spread to other parts of the body. These tumors rarely develop into a malignant tumor, but can press on the sensitive areas of the brain and cause serious health issues. Most benign tumors can be removed with nearly no chances of recurrence after removal. Benign tumors in most other parts of the body are not likely to be life threatening, but can sometimes be so when in the brain.
Malignant brain tumors :
Malignant brain tumor contains cancer cells that arise in the brain tissue and hence a malignant brain tumor is also known as 'brain cancer'. These cancer cells are likely to grow rapidly and crowd or invade the nearby healthy brain tissue, and often become a serious life threatening condition. Sometimes, cancer cells tend to break away from the malignant brain tumor and spread to other parts of the brain or the spinal cord, but seldom do they spread to other parts of the body. Benign tumors in most other parts of the body are not likely to be life threatening, but can sometimes be so when in the brain.
Secondary brain tumors :
Secondary brain tumors are metastatic tumors that occur when cancer cells that originate in other organs spread to the brains intracranial sphere to cause a tumor in the brain. Lung Cancer, Breast Cancer, Malignant Melanoma, Kidney Cancer and Colon Cancer, are the most common types of cancers that can cause secondary tumors of the brain. Brain Tumor