What is a brain tumor?
A malignant tumor is a newly formed tissue from cells that have an altered genetic apparatus. That is, cells divide continuously and uncontrollably. Moreover, they themselves in the process of division lose their functions. Neoplasms from such cells begin to squeeze neighboring areas of the brain, grow into healthy tissues, so the brain can no longer function fully.
Benign cancer, unlike malignant cancer, does not grow into adjacent tissues, although it can squeeze them. Also, her cells partially retain their original functions, so she is not so dangerous.
A subtentorial brain tumor is either benign or malignant formations in those areas that are below the cerebellum. It can grow from different types of brain tissue.