Bilateral chronic subdural hematoma: What is the clinical significance?

Abstract Background Bilateral chronic subdural hematoma (CSDH) is not uncommon, although information on this condition is limited. Aims We aim to identify the differences in clinical characteristics between patients with bilateral or unilateral CSDH. Methods Ninety-eight patients with CSDH were enrolled in the two-year retrospective study. We investigated neurological outcome, morbidity, mortality, and recurrences after burr hole craniostomy for CSDH. Results Bilateral convexity hematomas were identified in 25 of 98 CSDH (25.51%). The patients with bilateral lesions had a lower incidence of hemiparesis than those having unilateral lesions ( p = 0.004). Analysis of the neuro-images revealed significant differences in the presence of a midline shift ( p = 0.001) and thickness of the hematoma ( p