Vanishing of A Congenital Intracranial Aneurysm.

Intracranial aneurysms in neonatal period and early infancy may be resorbed spontaneously or due to removal of predisposing factors. herein, we presented a rare case of vanishing of a large thrombosed intracranial aneurysm in a 25-day-old girl presented with head enlargement and vomiting. magnetic resonance imaging (mri) revealed a severe hydrocephalus accompanied by a 1.5-cm aneurysm at the bifurcation of the right middle cerebral artery (mca). doppler ultrasonography confirmed a flow with a magnitude almost similar to that of the right mca flow, inside the mass located adjacent to it. the hydrocephalus was managed by ventriculo-peritoneal (vp) shunt. the patient underwent a conservative observation for several months. subsequently, the aneurysm was vanished in control images.