[Congenital stenosis of interventricular foramina revealed by recurrent intracranial hypertension].

Non-tumoral stenosis of interventricular foramen is a rare clinical condition. It can be either unilateral, causing monoventricular hydrocephalus, or bilateral leading to biventricular hydrocephalus. The pathophysiology of this misdiagnosed entity remains controversial. The non-tumoral stenosis of interventricular foramen can be either acquired or congenital. The latter usually manifesting with a neonatal hydrocephalus. We report a case of congenital bilateral stenosis of interventricular foramen, in an 8-year-old girl, revealed by recurrent intracranial hypertension. Diagnosis was relied on 3D-CISS sequences MRI. The child showed full recovery after neuroendoscopic septal fenestration and ventriculo-peritoneal shunt.