[Policy Review] A comprehensive framework for glioma surgery by the PIONEER Consortium and RANO resect group, part 1: intraoperative recommendations for mapping, monitoring, and decision making

In adult patients with newly diagnosed or recurrent diffuse glioma, more extensive resection is associated with longer progression-free and overall survival. Intraoperative mapping techniques are used to safely increase the extent of resection by locating, monitoring, and preserving the function of potentially infiltrated brain during surgery. However, there is no consensus on the indications for intraoperative mapping, the optimal functional tests to be used intraoperatively, or intraoperative decision making.