• World Neurosurg · Nov 2020

    Case Reports

    Pathological Changes in Surgically Resected Cystic Cerebral Cavernous Malformation 13 Years After Radiosurgery - Case Report and Literature Review.

    • Chao Wang, Bing Yu, Fengyue Zhang, Kaijian Zheng, and Yugong Feng.
    • Qingdao University, Qingdao City, China.
    • World Neurosurg. 2020 Nov 1; 143: 392-397.

    BackgroundStereotactic radiosurgery (SRS) as a treatment for cerebral cavernous malformation (CCM) has been controversial, but there are few pathological reports showing its long-term therapeutic effect, and literature reporting the CCM cyst formation after SRS is also rare.Case DescriptionWe present a 30-year-old woman with a ruptured right parietal CCM treated with SRS 13 years ago. The post-SRS imaging follow-up revealed CCM rehemorrhage and cyst formation. Surgical resection was performed, and a subsequent pathological examination revealed that the CCM still had some incomplete occluded vessels and a large number of newly formed capillaries, and hemorrhagic band and hemosiderin were seen around the nodule.ConclusionsRecurrent hemorrhage after SRS for CCM could be related to incomplete occluded vessels and newly formed capillaries. Repeated hemorrhage from CCM newly formed capillaries into the small cavity increased the osmotic pressure, resulting in fluid entering the cavity and cyst enlargement.Copyright © 2020 Elsevier Inc. All rights reserved.

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