May also be called: Medulloblastoma; Posterior Fossa PNET; Supratentorial
Primitive neuroectodermal (PRIM-ih-tiv nur-oh-ek-tuh-DERM-ul) tumors, or PNETs,
are tumors that can happen anywhere in the brain
More to Know
A primitive, or undifferentiated, nerve cell is a cell in the brain or central
nervous system that doesn't have a specific function. Primitive cells are often malignant
(meaning they are often cancerous),
and start to grow out of control. Doctors call the resulting tumors primitive neuroectodermal
tumors, or PNETS.
Types of PNETs include medulloblastoma, posterior fossa PNET, supratentorial PNET,
and pineoblastoma. All of these tumors are able to metastasize (spread) through the
cerebrospinal fluid that surrounds the brain and the spinal cord.
PNET symptoms generally depend on the size and location of the tumor, but common
headaches, nausea, and vomiting (especially in the morning) caused by increased
pressure in the head