Moya moya disease and basal ganglia haemorrhage
55 year old male with sudden decrease in conscious state.
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CT without contrast obtained at the time of admission demonstrates a left sided basal ganglia haemorrhage, with extension into the ventricle.
CT angiography demonstrates characteristic appearances of moya moya disease, with obliteration of the supraclinoid internal carotid arteries, and numerous collaterals from the posterior circulation and external carotid circulation.
Haemorrhage is a common complication of adult moya moya disease.