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An adult case of shunt malfunction presenting with acute quadriparesis as a manifestation of foramen magnum syndrome with acquired Chiari type I malformation is described in this study. The corticospinal function was restored after shunt revision. MRI showing considerable ascent of cerebellar tonsils after surgery is shown. Theories regarding the formation of acquired Chiari I malformations, alongside the possible synergistic roles of intracranial pathologies and cerebrospinal fluid drainage in the development of this entity are discussed.

Original publication




Journal article


Br J Neurosurg

Publication Date





695 - 696


Adult, Arnold-Chiari Malformation, Foramen Magnum, Humans, Male, Quadriplegia, Syndrome, Treatment Outcome, Ventriculoperitoneal Shunt