Oligodendrogliomas occur in the oligodenrocytes, a type of supportive brain tissue. They are most commonly found in the cerebral lobes of the brain. They tend to occur in young and middle aged adults with a small population of children being diagnosed each year. Pure oligodendrogliomas are rare but mixed gliomas; tumors made up of both oligodendrogliomas and astrocystes are more common.
Atypical teritoid/rhabdoid tumors (ATRT) are rare, high-grade tumors that occur most commonly in children under the age of 2. They can be found in any part of the brain and tend to be aggressive. They spread throughout the central nervous system.
A ganglioglioma, also called gangliocytomas or ganglioneuromas, arise in ganglia-type cells, which are nerve cells. They most commonly occur in the temporal lobe of the cerebral hemispheres, the third ventricle and less commonly in the spine. They are well-defined tumors with distinct margins, are slow growing and are rarely malignant.
Seizure are most commonly present
Treatment is typically surgery and may include radiation if a full resection is not possible.
The glioma tumor, although not exactly the same, is very similar to an astrocytoma brain tumor and the names are often used interchangeably. Please refer to our definition of astrocytomas for a detailed explanation of this tumor.
The choroid plexus is located within the ventricles of the brain and produces cerebral spinal fluid. A choroid plexus tumor arises in this location of the brain. They account for approximately 1-3% of pediatric brain tumors and are most common in infants.
Primitive neuroectodermal tumors, or PNETs, account for approximately 5% of pediatric brain tumors. They are a group of highly malignant tumors composed of small round cells of neuroectodermal origin that affect soft tissue and bone
Germ cell tumors, also called germinomas, embroynal carcinomas, endodermal sinus tumors and teratoma, arise in the pineal or suprasellar region of the brain. They are most often diagnosed around the time of puberty and are more common in boys than girls.
In the case of suprasellar germ cell tumors, hormonal problems are commonly present
Pineal region tumors cause increased pressure on the brain, with headache and vision problems
A glioma is a tumor that grows from glial cells, which are supportive cells in the brain. Optic nerve gliomas grow specifically in the optic nerve which is the part of the brain that connects the eye to the visual center of the brain. Optic nerve glioma can effect one or both optic nerves.
Optic nerve gliomas are a type of pilocytic astrocytomas.
Types of Gliomas
Optic nerve gliomas are often slow growing and considered low grade or type I tumors.