Cerebrovascular Moyamoya Disease

-Study of collateral circulation with microangiography and translucidation-

Abstract

A 42 year-old male with cerebrovascular moyamoya disease died of massive intracerebral hemorrhage Contrastmedium-injected brain was examined by microangiography and translucidation to know the role of moyamoya vessels in the cisterns and the brain.
Moyamoya vessels in the cistern branched from the posterior communicating, anterior choroidal and middle cerebral arteries connected each other. Microangiogram and translucidation revealed moyamoya vessels in the basal ganglia and the lateral ventricle, which connected with cortical arteries. Thin and long branches, which ramified from the moyamoya vessels in the basal ganglia and the lateral ventricle, ran from the ventricle wall to the cerebral cortex. They may be called “ventriculofugal medullary arteries”. Anastomotic vessels were also visualized in the moyamoya vessels and the medullary arteries.
Moyamoya vessels play a role as collateral way to maintain normal ventriculopetal perfusion. And ventriculofugal perfusion newly developed.
Moyamoya vessels developed around the lateral ventricle wall are probably responsible for ventricular hemorrhage.