Cancer refers to the abnormal and uncontrolled growth of damaged cells in the human body. These abnormally grown damaged cells are lumped together to form tumors in the human body. In cancer, these malignant tumors interfere in the normal working of the nervous, digestive, nervous and circulatory system of the human body. Additionally, these tumors release unwanted hormones that alter the proper functioning of the body. There are a total of five stages of cancer that are classified according to the cell growth inside the human body. Each stage of brain cancer exhibits different symptoms. The stage 4 brain cancer is the most dangerous and many a times, incurable.

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Stages of Brain Cancer
Staging a cancer determines the extent to which the cancer has spread. The stages give the doctor an idea about the appropriate treatment that must be given to the cancer patient. The stages are helpful for doctors in assessing an appropriate prognosis. In stage 4 brain cancer, cancer cells multiply rapidly and can affect the other nearby organs. Also, the cancer cells can divide and can move to other parts of the human body through the lymphatic system and the bloodstream. Cancer advancement from brain to other parts of the body is called metastasis. The staging in the brain cancer has five stages as stated below:

Stage 0: This stage is called carcinoma in situ, which means that the cancer is developed only in the layers of the particular cell that is affected.

Stage I: The stage 1 cancer cannot be seen through the microscope and the cell growth looks like normal cells. This is an early stage of cancer, which can be cured successfully. Cancer in stage 1 can be cured by surgery.

Stage II: The damaged cells start growing at a significant rate. At this stage, the cancer can be treated and cured. However, at this stage the possibility of re-occurrence of cancer, even after it has been treated, is very high.

Stage III: At this stage of the brain cancer, the cells grow at a very high rate. The brain cancer at this stage can also spread to tissues other than brain in the body.

Stage IV: The stage four brain cancer is the most dreadful stage of all the stages. At this stage, the cancer is spread to other parts of the body and this stage is called metastasis. The possibility of curing the cancer at this stage is very low.