A Case Report on Arnold Chiari Type III: Constellation of Disorders, from Diagnosis to Treatment

Arnold-Chiari type III is a malformation characterised by protrusion of the brainstem, cerebellum and lower part of the brain due to a cranial malformation. It is a rare congenital malformation in which the brain protrudes through a fissure in the skull. It occurs during pregnancy when the neural tube of the foetus does not close completely. The Chiari malformation type III, although described in the literature, remains rare, complicating our understanding of their common pathophysiological mechanisms and their management.

We report the case of a female infant, admitted for seizure with hypotonia and dysmophic syndrome. An MRI was performed showing encephalomeningocele leading for Arnold Chiari type III diagnosis.

The aim of this article is to understand and investigate the association between Arnold-Chiari type III malformation and encephalocele in order to develop more effective therapeutic strategies.