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  • Title: Migration of an intraspinal schwannoma documented by intraoperative ultrasound: case report.
    Author: Friedman JA, Atkinson JL, Lane JI.
    Journal: Surg Neurol; 2000 Dec; 54(6):455-7. PubMed ID: 11240178.
    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.
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