MRI in aqueduct compression and obstructive hydrocephalus due to an ecstatic basilar artery.
We describe a patient with an ecstatic basilar artery in whom MRI showed marked indentation of the floor of the third ventricle and backward displacement of the midbrain, probably causing aqueduct stenosis. It appeared likely that the associated hydrocephalus was due not only to any "water-hammer" effect, but also to occlusion of the aqueduct.
Neuroradiology Section, Caselas M.R. Unit, R. Carolina Angelo, Lisbon, Portugal.
G
G
Branco
A
A
Goulão
J M
JM
Ferro
D001488:Basilar Artery / Q000473:pathology* / Q000503:physiopathology; D002535:Cerebral Aqueduct / Q000473:pathology* / Q000503:physiopathology; D002555:Cerebrospinal Fluid / Q000502:physiology; D003251:Constriction, Pathologic / Q000175:diagnosis; D006801:Humans; D006849:Hydrocephalus / Q000175:diagnosis* / Q000503:physiopathology; D008297:Male; D008875:Middle Aged