Embolization before surgical resection of tumors has been demonstrated to reduce intraoperative blood loss, but the optimal time that should elapse between embolization and tumor resection has not been established. We evaluated whether immediate surgical resection (< or =24 h) after embolization or delayed surgical resection (>24 h) was more effective in minimizing intraoperative blood loss.
Department of Neurological Surgery, Brain Tumor Research Center, University of California, San Francisco, San Francisco, California 94143-0112, USA. chunj@neurosurg.ucsf.edu