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  1. Chiari 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.

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

    Oct 2, 2023 · What is a Chiari malformation? 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).

  3. Chiari 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 …

  4. Chiari Malformations - National Institute of Neurological Disorders …

    Jul 19, 2024 · Chiari malformations (CM) are caused by problems in the structure of the brain and skull. In Chiari malformations, the lower part of the brain presses on and through an opening in the base of …

  5. Chiari Malformation Type I - Johns Hopkins Medicine

    A Chiari malformation is a problem in which a part of the brain (the cerebellum) at the back of the skull bulges through a normal opening in the skull where it joins the spinal canal.

  6. Chiari Malformation - Boston Children's Hospital

    Chiari malformation is an abnormality in the back of the head where the brain and spinal cord meet. It causes some of the brain tissue at the base of the skull to be pushed into the spinal canal. This can …

  7. Understanding Chiari Malformation: Causes, Symptoms, and Diagnosis

    Jul 3, 2025 · Chiari malformation is a neurological condition that can cause a range of symptoms, from headaches to difficulty with coordination and balance. Understanding what this condition entails, its …

  8. Chiari Malformation - AANS

    Apr 29, 2024 · Type II Chiari malformation. This malformation is characterized by downward displacement of the medulla, fourth ventricle and cerebellum into the cervical spinal canal, as well as …

  9. Chiari Malformation - American Brain Foundation

    Chiari malformations occur when part of the brainstem extends beyond the opening where the spinal cord connects to the skull. Learn about symptoms, diagnosis, and treatment options for CMs.

  10. Chiari Malformation: Symptoms, Types and Treatment - WebMD

    Oct 9, 2024 · Chiari malformation is usually something you're born with. But in some cases, you may develop it as an adult because of a head injury or a tumor in your brain. There are several types, and …