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Updated: Oct 9, 2026
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Intraoperative Ultrasound in Spinal Surgery
Published on: August 17, 2022
Migration of an intraspinal schwannoma documented by intraoperative ultrasound: case report
J A Friedman1, J L Atkinson, J I Lane
1Department of Neurological Surgery, Mayo Clinic, Rochester, Minnesota, USA.
Surgical Neurology
|March 10, 2001
Abstract
Background:
Tumors of the cauda equina may shift with positioning on the operating table. Accurate localization at surgery is important to facilitate appropriate laminectomy and durotomy.
Case Description:
We report a case of a 28-year-old man with a schwannoma of the cauda equina at L4 on preoperative MRI. Intraoperative ultrasound revealed that the tumor had migrated cephalad, and was now located at L3.
Conclusion:
Intraoperative ultrasound is a valuable technique in localization of tumors of the cauda equina.