venous thrombosis AE cerebral venous thrombosis AE a venous thrombosis AE that is characterized by thrombosis of the venous channels in the brain. It is an uncommon cause of cerebral infarction relative to arterial disease, but it is an important consideration because of its potential morbidity. SS WEB: http://emedicine.medscape.com/article/1162804-overview [SS] From http://medical-dictionary.thefreedictionary.com/cerebral+venous+thrombosis, Merwarth syndrome - progressive hemiplegia due to venous occlusion. Synonym(s): cerebral venous thrombosis 10008138 brain thrombosis AE