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    • Lower back of your skull

      • A Chiari malformation is a growth abnormality where brain tissue in the lower back of your skull extends into your spinal canal (the base of your skull). It happens because of a structural problem like a smaller-than-expected skull size.
      my.clevelandclinic.org/health/diseases/6008-chiari-malformation

      Chiari Malformation: What It Is, Symptoms, Types & Treatment

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  3. www.mayoclinic.org › diseases-conditions › chiariChiari malformation - Symptoms and causes - Mayo Clinic

    Oct 20, 2023 · Chiari malformation (kee-AH-ree mal-for-MAY-shun) is a condition in which brain tissue extends into the spinal canal. It occurs when part of the skull is misshapen or smaller than is typical. The skull presses on the brain and forces it downward. Chiari malformation is not common, but increased use of imaging tests has led to more diagnoses.

  4. my.clevelandclinic.org › health › diseasesChiari Malformation: What It Is, Symptoms, Types & Treatment

    A Chiari malformation is a structural abnormality that forces part of your brain to move into your spinal canal. Locations : Abu Dhabi | Canada | Florida | London | Nevada | Ohio |

  5. en.wikipedia.org › wiki › Chiari_malformationChiari malformation - Wikipedia

    In neurology, the Chiari malformation (/ kiˈɑːri / kee-AR-ee; CM) is a structural defect in the cerebellum, characterized by a downward displacement of one or both cerebellar tonsils through the foramen magnum (the opening at the base of the skull).

  6. www.ninds.nih.gov › health-information › disordersChiari Malformations | National Institute of Neurological ...

    Jul 19, 2024 · Normally the cerebellum and parts of the brain stem sit above an opening in the skull (called the foramen magnum) where the spinal cord connects to the brain. When part of the cerebellum extends below this opening and into the upper spinal canal, it is called a Chiari malformation.

  7. www.healthline.com › chiari-malformationChiari Malformation: Symptoms, Causes, and More - Healthline

    Mar 23, 2017 · It’s located behind the brain stem, where the spinal cord meets the brain. When the cerebellum pushes into the spinal canal, it can block the brain’s signals to your body. It can also cause...

    • Marjorie Hecht

  8. www.ncbi.nlm.nih.gov › books › NBK431076Arnold-Chiari Malformation - StatPearls - NCBI Bookshelf

    Sep 4, 2023 · Chiari I is the least severe and often found incidentally. It is characterized by one or both pointed (not rounded) cerebellar tonsils that project 5 mm below the foramen magnum, measured by a line drawn from the basion to the opisthion (McRae Line).

  9. www.aans.org › chiari-malformationChiari Malformation - AANS

    Apr 29, 2024 · Chiari Resources. Overview. Chiari malformation is considered a congenital condition, although acquired forms of the condition have been diagnosed. In the 1890s, a German pathologist, Professor Hans Chiari, first described abnormalities of the brain at the junction of the skull with the spine.