Moyamoya Disease
Moyamoya disease is a progressive narrowing of brain arteries with development of fragile collateral vessels.
When to get help quickly: Urgent hospital review is important if there is sudden weakness, trouble speaking, a seizure, or any stroke-like symptom.
Common symptoms
Symptoms may include repeated weakness episodes, speech difficulty, headaches, seizures, or strokes, sometimes in children and sometimes in adults.
When imaging helps
Imaging helps show the narrowing of the brain arteries, the tiny collateral vessels, and whether previous strokes or reduced blood flow have already occurred.
What radiology does
MRI, CT angiography, and catheter angiography show the vessel narrowing and collateral circulation.
What usually happens next
Management may include stroke prevention, neurological follow-up, and revascularization surgery in selected patients.
Seen this on your report?
Your doctor or the radiologist who wrote it can tell you what it means for you.