Wolak M L, Murphy E C, Powell S Z
Department of Neurosurgery, The Methodist Hospital, Houston, Texas, USA.
Acta Neurochir (Wien). 2007;149(7):705-12; discussion 712. doi: 10.1007/s00701-007-1165-6. Epub 2007 May 7.
Cyst formation is a recognized late complication after stereotactic radiosurgery for cerebral arteriovenous malformations (AVMs). We report on a patient with delayed cyst formation after combined embolization and stereotactic radiosurgery treatments for a cerebral AVM. The true nature of the cyst was complicated by tumefactive magnetic resonance MR imaging characteristics. The tumefactive cyst was associated with an additional imaging finding suggestive of a neoplastic lesion - a 'blush' on conventional angiography.
囊肿形成是脑动静脉畸形（AVM）立体定向放射外科治疗后一种公认的晚期并发症。我们报告了一例在脑AVM联合栓塞和立体定向放射外科治疗后出现延迟性囊肿形成的患者。囊肿的真实性质因具有肿胀性磁共振成像（MR）特征而变得复杂。该肿胀性囊肿还伴有另一个提示肿瘤性病变的影像学表现——传统血管造影上的“造影剂外溢”。
