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Colloid cysts of third ventricle

Other Names for this Disease
  • Neuroepithelial cysts of third ventricle
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Colloid cysts of the third ventricle are non-cancerous brain lesions. The third ventricle is a cavity in the brain that is filled with cerebral spinal fluid (CSF). Colloid cysts can cause blockages resulting in a build up of CSF in the brain (hydrocephalus) and increased pressure. Some colloid cysts are asymptomatic while others cause neurological symptoms, such as headaches, swelling of the optic nerve (papilledema), and drop attacks. When symptoms are present onset tends to be in the third to sixth decade of life. While uncommon, symptoms of colloid cyst can become life threatening.[1]
Last updated: 1/4/2013


  1. Norden AD, Chheda MG, Wen PY. Uncommon brain tumors. In: Basow, DS (Ed). UpToDate. Waltham, MA: UpToDate; 2012;
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Basic Information

  • The Weill Cornell Medical College Web site has information on colloid cyst. Click on Weill Cornell Medical College to view the information page.

In Depth Information

  • The Online Mendelian Inheritance in Man (OMIM) is an catalog of human genes and genetic disorders. Each entry has a summary of related medical articles. It is meant for health care professionals and researchers. OMIM is maintained by Johns Hopkins University School of Medicine. 
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