Oct 23, 2017 · Pilocytic astrocytoma is a rare type of brain tumor that occurs mostly in children and young adults under age 20. The tumor rarely occurs in adults. The tumor rarely occurs in adults.Author: Jacquelyn Cafasso.
Pilocytic astrocytoma (grade I) Pilocytic astrocytoma is a benign brain tumor that arises from astrocytes, the supportive cells in the nervous system. These slow-growing tumors usually occur in children, and are considered the most benign type of astrocytoma.
Pilocytic astrocytomas are low-grade gliomas—a family of slow-growing tumors that arise from glial cells. They are the most benign and most treatable of the gliomas, with a cure rate of over over 90 percent.