Headache and MRI Changes after Endovascular Treatment of a Cerebral Aneurysm

Abstract EN

Background.

The main complications after endovascular therapy of intracranial aneurysms are aneurysm rupture and thromboembolic events.

Yet, the widespread use of magnetic resonance imaging (MRI) in follow-up of these patients also demonstrates other, rarely known complications such as aseptic meningitis and foreign body reaction.

Case Presentation.

A small aneurysm in the right posterior communicating artery was treated with endovascular therapy in a 65 year old woman.

Two weeks after successful interventional treatment, the patient developed a headache.

On MRI performed five months after intervention, vasogenic edema was seen in the vascular territory of the right internal carotid artery.

The edema and the symptoms diminished without specific treatment within a year.

Interpretation.

The clinical and radiological presentation of this case are suggestive of a foreign body reaction, a treatable condition that radiologists and clinicians should be aware of.