Astrocytomas are the most common type of primary brain tumor within the group of brain tumors called gliomas. Primary means they have originated from the brain instead of spreading from elsewhere. About one third of all brain tumors diagnosed are astrocytomas.
Craniotomy for Tumor
This procedure, performed under general anesthesia, creates an opening through the skull for brain tumor removal. The surgery usually requires between two to five hours to complete. The length of surgery depends on the type and size of the tumor.
In this surgical procedure, the physician takes a small sample of tissue from the brain through a hole in the skull. Stereotactic biopsy is commonly used to take a sample from a tumor. The procedure is usually performed under local anesthesia and requires at least an overnight hospital stay.