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Cerebellar tonsil

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Brain: Cerebellar tonsil
Gray703
Under surface of the cerebellum. (Tonsil visible at center right.)
Gray704
Sagittal section of the cerebellum, near the junction of the vermis with the hemisphere. (Tonsil visible at bottom center.)
Latin tonsilla cerebelli
Gray's subject #187 791
Part of Cerebellum
Components
Artery PICA
Vein
BrainInfo/UW hier-668
MeSH [1]

The cerebellar tonsil (amygdaline nucleus) is a rounded mass, situated in the hemispheres of the cerebellum.

PathologyEdit

Arnold-Chiari malformation is a congenital anomaly of the brain in which the cerebellar tonsils are elongated and pushed down through the opening of the base of the skull (see foramen magnum), blocking the flow of cerebrospinal fluid (CSF).

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