title: Congenital constriction of the foramen of Monro.
abstract: We report two cases of hydrocephalus in adults. The radiological investigations and direct inspection during surgery in one of the cases indicate that the hydrocephalus is caused in both cases by a benign stricture in the region of the foramen of Monro and that this constriction is congenital. This origin of hydrocephalus has not been reported previously in adults.
mesh_terms: D000328:Adult; D002552:Cerebral Ventricles / Q000002:abnormalities*; D003251:Constriction, Pathologic / Q000151:congenital; D005260:Female; D006801:Humans; D006849:Hydrocephalus / Q000000981:diagnostic imaging / Q000209:etiology* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D014057:Tomography, X-Ray Computed