Introduction:

Arnold-Chiari malformations are a heterogeneous group of neurological disorders characterized by alterations within the regions of the cerebellum, brain stem and craniocervical junction; all result in inferior displacement of the cerebellum into the spinal canal through the foramen magnum, whether in conjunction with the inferior cord or not.

Objective:

To describe the clinical findings, complementary studies, diagnostic criteria, therapeutic approach and evolution, in a case with type I Chiari malformation with syringomyelia.

Case report:

A patient with an insidious course of headache is reported. She was diagnosed with type I Chiari malformation with syringomyelia, which required neurosurgical treatment. The postoperative evolution was favorable.

Conclusions:

Conclusions: Arnold-Chiari malformation is a rare entity. the appearance of nuclear magnetic resonance has allowed it to be diagnosed and therefore its incidence has increased. The reported case had a classic clinical course.

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