Masahiro Nonaka

Intraoperative detection of a false-negative facial motor evoked potential by direct facial nerve stimulation during vestibular schwannoma surgery: A case report

Background: False-negative transcranial facial motor evoked potential (FMEP) findings have previously been recognized retrospectively through discrepancies between preserved intraoperative FMEPs and postoperative facial palsy. To the best of our knowledge, no previous report has...

Primary Cerebral Pleomorphic‐Myxoid Sarcoma With Many Hyaline Globules

ABSTRACT A case of primary sarcoma that arose in the right temporal lobe of a 59‐year‐old man is reported. The patient had a history of resection of a “pituitary tumor” and postoperative radiotherapy about 40 years earlier. The cerebral tumor consisted of loose and diffuse prolif...