SMALL VASCULAR MALFORMATIONS OF THE BRAIN: THEIR RELATIONSHIP TO UNEXPECTED DEATH, HYDROCEPHALUS AND MENTAL DEFICIENCY


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Abstract

SUMMARYThe range of clinical phenomena associated with very small vascular malformations is presented in it of case studies. These include subarachnoid hemorrhage, focal seizures, intraventricular hemorrhage, hydrocephalus, and mental deficiency.In some instances, the vascular malformations are a part of an area of tissue dysgenesis, involving neural parenchyma as well as vasculature.The small malformations resulting in subarachnoid and intraventricular hemorrhage are usually single lesions and those causing obstructive hydrocephalus may be.Multiple small vascular anomalies are found in some patients with mental deficiency hut are regarded as one part, of a more complex process.Enlargement of the vascular tree in large areas of the brain without focal malformation is a common finding in patients with mental deficiency. These do not indicate increased vascular supply to the neural parenchyma.

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