The extent of peritumoral edema on the CT scans positively related to the duration of preoperative symptoms, the location and size of tumors, and breaching of the cortex by meningiomas.

• 我们的研究发现脑瘤周围水肿的严重性与手术前症状期间长短，肿瘤位置和大小，以及脑皮质完整性的破坏有关。