Figure 2A and 2B. Magnetic resonance angiography (MRA) revealed irregularities in the small bilateral cavernous part of the internal carotid artery in both calibers. It also showed a narrowing proximal left middle cerebral artery with collateral vessel formation suggestive of Moyamoya angiopathy.

From

Moyamoya Angiopathy Presenting with Cerebrovascular Stroke post-COVID-19 Vaccination

Mohammed Aboelnaga, Mahfoud El. Bashari, Amani Alzaabi, Hesham Eissa

American Journal of Medical Case Reports. 2023, 11(12), 169-171 doi:10.12691/ajmcr-11-12-1