隐匿性血管畸形引起慢性扩展性脑内血肿

Occult Cerebrovascular Malformation As A Cause of Chromic Expanding Intracerebral Hematoma

报告２８例经手术、病理证实的隐匿性血管畸形引起慢性扩展性脑内血肿。临床表现为缓慢病程急性起病的高颅压症状和／或以癫痫为首发症状的局灶性神经损害。ＣＴ扫描易误诊为脑瘤。ＭＲＩ扫描在Ｔ＿２加权像上病灶中心部为高信号影，而周边为含铁血黄素环的低信号带影，具有特征性。病理检查可见该类血肿有包膜形成，且包膜上富含毛细血管。这些血管反复出血和渗血使其成为具有扩展性的特征。本病的治疗原则需连同包膜一起摘除。

Twenty-eight patients with chromic expanding intracerebral hematoma caused by occult cerebrovascular malformation which wae proved by surgery and.pathology were reported.Clinical findings characteriged by the slow progress of the disease with symptoms of increased intracranial pressure symptoms from acute attack and /or focal neurologic deficit with first manifestation of epilepsy.CT scanning was easily miedignosiedas a brain tumor.Characteristic MRI scanning showed a hyperdensity signal at the centre and hypodensity signal at the peripheral region containing hemosiderin on T2-weightd image.Under microscopical examination the poripheny of hematoma had a capsule which contained abundant capillary.As the result of bleeding and oozing from the chronic intracerebral hemotoma had the expanding feature The principle of tre-atment was that the focus should be extirpated along with the capsule.