The Pathogenesis of Chronic Subdural Hematomas: A Study on the Formation of Chronic Subdural Hematomas and Analysis of Computed Tomography Findings.

Background: The origin of chronic subdural hematomas (CSDH) and the pathophysiology of its enlargement remain unknown. The chemical fluid composition of CSDH, the contribution of cerebrospinal fluid (CSF) to its enlargement, and the relationship to its appearance on computed tomography (CT) also are not entirely clear.

Methods: In this prospective study, 58 samples in 41 patients treated surgically for CSDH were analyzed.