[Hydrocephalus caused by obstruction of the foramina of Luschka and Magendie in adults. Report of a case. Etiopathogenic discussion].

The authors report the case of 30 years old patient presenting with an hydrocephalus responsible for high intracranial pressure and cerebellar ataxia. The fourth ventricle dilatation was predominant and there was no passage of the contrast media in the cisterna magna during ventriculography. For lack of neonatal antecedents and neurological pathology a congenital origin was evoked. The obstruction of the foramina of Luschka and Magendie with an hydraulic stability in the ventricles during the life before decompensation was likely. A ventriculo-peritoneal shunt, seemed to be the better treatment with regard to the permeability of the aqueduct.