Related Experiment Video
Updated: Jun 19, 2026

Role of Diffusion MRI Tractography in Endoscopic Endonasal Skull Base Surgery
Published on: July 5, 2021
Imaging and clinical features of an intra-axial brain stem schwannoma
S Muzzafar1, L Ketonen, J S Weinberg
1Neuroradiology Section, University of Texas MD Anderson Cancer Center, Houston, Texas 77030, USA.
Abstract:
A 68-year-old man presented with a highly symptomatic brain stem tumor originally thought to be a brain stem glioma. Intraoperative MR imaging guidance was used to resect the tumor, and real-time evoked potentials improved during surgery. Pathology findings unexpectedly indicated that the tumor was an intra-axial brain stem schwannoma, a condition reported, to our knowledge, only 6 times previously in the literature. The patient made an excellent recovery with reversal of his symptoms.

