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

Background: Stereotactic 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 Description: We 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.