Abstract
Recurrence of chronic subdural haematoma (CSDH) is a significant issue in neurosurgical practice, and to distinguish individuals at high risk is important. In this study, we aim to clarify the relationship between quantitative haematoma volume and recurrence of CSDH.For this two-year retrospective study, 94 patients with CSDH were enrolled and all underwent burr-hole craniostomy with closed-system drainage. The volume of haematoma before surgery was quantitatively analysed by computed tomography (CT) of the brain. The patients were subdivided into 2 groups based on whether recurrence of CSDH was present or not. We investigated the intergroup differences in the volume of haematoma and other radiographic parameters.Recurrence of CSDH was identified in 13 of 94 patients (14%). Univariable analysis of CT features revealed significant differences in the volume of haematoma, bilateral cerebral convexity, and layering of the haematoma. To adjust for the confounding effect, these 3 parameters were entered into multivariable logistic regression analysis. Ultimately, neither the volume of haematoma (p = 0.449) or bilateral cerebral convexity (p = 0.123) was relevant in this model. Only the presence of layering of the haematoma was independently associated with recurrence of CSDH (p = 0.009).The volume of CSDH is not related to recurrence in patients undergoing burr-hole craniostomy with closed-system drainage. Layering of the haematoma was the only independent risk factor on CT images for recurrence of CSDH in our series.
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