What is astrocytoma?
Astrocytoma is a malignant brain tumor that arises from astrocytes. This type of tumor is "graded I to IV" based on how normal or abnormal the cells look. Low-grade astrocytomas are usually slow-growing and localized, while high-grade astrocytomas grow at a rapid pace and require different treatment. Most astrocytomas found in adults are high-grade, and most found in children are low-grade. They typically appear in the largest part of the brain, the cerebellum, but they can appear in other parts of the brain and nervous system; this includes the cerebrum, brainstem and spinal cord.