<unk> <unk><unk><unk> <unk>  are normally composed of a variety of cells including astrocytes, ganglion cells, blood vessels, and<unk> ocytes, which are the cells of this organ.<unk> ocytes are specialized neurons, which are rich in monoaminergic neurotransmitters, including, serotonin, norepinephrine, and melatonin. Specifically,<unk><unk>  of this<unk>  are made up of ependymal cells which form papilla. The papilla is meant to be surface cells. The ependymal cells line the inside of the ventricles of the brain. These cells have proteins that make up the characteristics of the<unk>  These proteins arise from blood vessels, nerve cells and muscle cells. These<unk> ,<unk><unk>  in this case, have no known predisposing genetic characteristics, as stated by Dr. Janss when I interviewed her. She said that there is nothing that links the likelihood of getting this<unk> type to genetics, meaning nothing is inherited. However, technically speaking, there is genetics involved, just not in the sense of inheritability. The<unk> cells may differ in their structure and function, but they all have normal function, which is directed by the deoxyribonucleic acid, or DNA. There are meant to be certain cells in a specific area, for the<unk><unk>  these are ependymal cells, and the cells divide into millions. As these cells divide, their genetic material is being copied. In a<unk>  there is a collection of mutations that are typos in the genetic material, which disrupts the function of the normal cell. Therefore, the cells differentiate from what they were meant to be. If the abnormal cells continue to grow, divide, and produce more abnormal cells, the mass of abnormal cells may eventually become a<unk> <unk>  are normally well circumscribed. They are reported to be fairly large ranging between 2.5 and 4.0 centimeters. These<unk>  sometimes feature a cystic component.
Papillary tumors of the pineal region
Optic nerve sheath meningioma
Intraocular schwannoma
Optic nerve glioma
Pituitary adenoma
Extracranial germ cell tumor
Optic nerve tumor
Central nervous system cavernous hemangioma