Cerebellar tonsil

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Brain: Cerebellar tonsil
Image:Gray703.png
Under surface of the cerebellum. (Tonsil visible at center right.)
Image:Gray704.png
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
NeuroNames	hier-668
Dorlands/Elsevier	t_13/12812425

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

Pathology

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).

This article was originally based on an entry from a public domain edition of Gray's Anatomy. As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.

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