Amalignant tumor has begun to allow cancers cells to enter the

A malignant tumor has begun to allow cancers cells to enter the brain. Maligant tumors divide into primary tumors which start with the brain and secondary tumors which scatter from somewhere else which is called brain metastasis tumors.

There are symptoms which produce by brain tumors. For example, a problem with vision, vomiting, mental changes and headache. The important problem may include having difficulty in walking. The cause of brain tumor is unknown but the most risk factor is that it may be inherited neurofibromatosis, ionizing radiation and vinyl chloride.

Medulloblastoma is the type of malignant tumor in children. The medical examination which is computed by tomography can diagnose it. Treatment of a malignant tumor is chemotherapy, radiation therapy and surgery.

explanation:

on disadvantage of hydroelectric power is the cost. another disadvantage of using hydroelectric power is finding a water source powerful enough to harvest hydroelectric power.

there really is life in the deepest part