Reversible Hyperintense Lesion after Balloon Occlusion Test

Haraguchi, Koichi; Houkin, Kiyohiro; Koyanagi, Izumi; Nonaka, Tadashi; Baba, Takeo

doi:10.1111/j.1552-6569.2007.00223.x

Cited by 1 publication

(1 citation statement)

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“…T2-weighted MRI and diffusion-weighted MRI revealed an abnormal hyperintense lesion in the right frontal lobe. They speculated that a possible mechanism of the seizure was vasogenic edema induced by the temporary ischemia and reperfusion of the BTO [7]. During endovascular treatment with transient arterial occlusion using a balloon catheter, occurrence of cerebral enhancement by contrast medium has been reported, which was possibly induced by reperfusion injury leading to BBB disruption [8].…”

Section: Discussionmentioning

confidence: 99%

Cerebral Angiography Induced Prolonged Focal Seizure and Hemiparesis during Carotid Artery Balloon Test Occlusion

Kato¹,

Sorimach²,

Ito³

et al. 2014

OJMN

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The frequency of neurologic complications of cerebral angiography is 0.3%-2.3%, and the frequency of the persistent neurologic deficits that remain over 7-10 days is 0.4%-0.5%. On the other hand, all neurologic complications of balloon test occlusion (BTO) have been reported in 0%-8.3% and especially in 1.6%-1.7% of symptomatic neurologic complications. There are a few reports concerning a seizure related to cerebral angiography and BTO. We report a case of prolonged seizures and left hemiparesis during and after BTO of the right internal carotid artery. The patient showed repeated focal seizures and prolonged left hemiparesis lasting for approximately 2 months. Computed tomography and magnetic resonance imaging demonstrated no abnormal findings. Suspected mechanisms of seizure were a cerebral blood flow change induced by BTO and neurotoxicity of accumulated contrast medium. A combination of prolonged focal seizures and subsequent hemiparesis is a rare complication of BTO, which should be taken into consideration during BTO.

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Section: Discussionmentioning

confidence: 99%