Preservation of the Posterior Meningeal Artery During Excision of a Foramen Magnum Meningioma: A Case ReportEiji Ito1, Yasuhiro Nakajima2, Takashi Izumi3, Takashi Tsujiuchi2, Ayako Motomura2, Ryuta Saito31Skull Base Surgical Center, Aichi Medical University Hospital, Nagakute, Aichi, Japan2Department of Neurosurgery, Daido Hospital, Nagoya, Aichi, Japan3Department of Neurosurgery, Nagoya University Graduate School of Medicine, Nagoya, Aichi, Japan* Correspondence: Eiji Ito, MD