Is a lesion like a tumor?

A lesion on the brain is just an injury or a disease. Some lesions are harmless or life threatening. I have a brain tumor(lesion) on the frontal lobe of my brain, its the size of a pea. If it grows I'll need surgery to remove it. A tumor is a disease on the brain which may cause some type of cancer. These tumors that cause cancer are life threatening to people. People that have leukimia (cancer) sometimes have problems with their blood. Sometimes people can help it but they cough up blood from the cancer that they have. Hope this helped!