"Idiopathic" Thrombosis in the Vertebrobasilar Arterial System in Young Men

Abstract
Two young men died as a result of cerebellar infarction due to thrombosis in the vertebrobasilar arterial system in the absence of atheromatous stenosis, other identifiable intrinsic arterial disease, or embolism. In each case the swollen cerebellar infarct had produced tonsillar herniation and hydrocephalus.