We read with great interest the article titled "Use of twist-drill craniostomy with drain in evacuation of chronic subdural hematomas: independent predictors of recurrence" by Escosa et al. [1]. The authors analyzed factors related to the recurrence of hematoma in 312 consecutive patients with chronic subdural hematoma (CSDH) who were treated with twist-drill craniostomy (TDC) with a drain. They measured the radiological parameters of CSDH, namely, hematoma width, midline shift, and hematoma side, before and after the operation, and concluded that preoperative and postoperative hematoma width and midline shift are independent predictors of recurrence. We completely agree with the viewpoint of Escosa et al., and we wish to provide further comment on this issue.
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