Imaging and Pathological Features and Recurrence Causes of Cystic Meningioma

Objective: This study aims to establish preoperative imaging features, establish how they are correlating with post-operative pathological features, and discover the causes of recurrence. Results: Data on imaging procedures in the preoperative period, records of surgical operations, and reports from pathology conclusions were collected. Among 623 patients who were undergoing neurosurgery resection of intracranial meningioma, 24 cases of cystic meningioma were identified, corresponding to a world incidence of 3.8 %. The hemispheric convexity was the most frequent place of localization. The apparent diffusional coefficient was significantly lower in grade 2 and grade 3 tumors if compared to grade 1. Full resection of the cystic component was possible in 18/24 cases. Partial resection in 3/24 cases. In 2/24 cases, it was not possible to make total or partial resection, but multiple biopsies were performed from the cystic walls.