There are stages of brain cancer from Stage 0 until Stage IV :
Stage 0: This stage is called carcinoma in situ, which means that the cancer developed only in specific cell layers are affected.
Stage I: Stage 1 cancer can not be seen through the microscope and the growth of cells look like normal cells. This is an early stage of cancer, which can be cured successfully. Cancer in stage 1 can be cured with surgery.