[Decompensation of brain stem function with sudden death in Arnold-Chiari anomaly].

The authors presented the clinical and anatomopathological description of Arnold-Chiari anomaly at 25 years old man, which caused cerebellar manifestation and sudden death. At the base of anatomopathological study the first type of Arnold-Chiari anomaly with dislocation of cerebellum tonsils into foramen magnum was recognized.