Chronic expanding hematoma following Gamma Knife irradiation for primary central nervous system lymphoma: illustrative case.

Abstract

Chronic expanding hematoma (CEH) is a rare disease characterized by slow expansion, especially reported after Gamma Knife radiosurgery (GKRS) for cerebral arteriovenous malformations. No cases have been reported following treatment for primary central nervous system lymphoma (PCNSL). Vascular endothelial growth factor and vascular endothelial growth factor receptor-1 (VEGFR-1) have been reported to be responsible for CEH induction. A 56-year-old woman underwent partial tumor removal for PCNSL in