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Updated: Jul 19, 2026

Intraoperative Ultrasound in Spinal Surgery

Intraoperative Ultrasound in Spinal Surgery

Published on: August 17, 2022

Intradural spinal Wilm's tumor metastasis: case report.

Christian W Sikorski¹, Peter Pytel, Charles M Rubin

¹Section of Neurosurgery, University of Chicago, Pritzker School of Medicine, Chicago, Illinois 60637, USA.

|October 14, 2006

Summary

Wilms tumor metastasis to the spine is rare. This case highlights a lumbosacral intradural metastasis from an intracerebral source, with limited improvement after radiation therapy.

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Area of Science:

Pediatric Oncology
Neuro-oncology
Spinal Metastasis

Background:

Wilms tumor, a common pediatric kidney cancer, rarely metastasizes to the central nervous system.
Intracranial metastases are more common than spinal metastases in pediatric oncology.

Observation:

A 7-year-old boy with a history of intracerebral Wilms tumor metastases developed new symptoms of low back pain and lower extremity weakness.
Imaging revealed an intradural lumbosacral lesion, distinct from any intracranial recurrence.
Surgical biopsy of the intradural lesion was performed due to extensive nerve root involvement.

Findings:

The intradural lumbosacral lesion represented a probable "drop metastasis" from the prior intracerebral Wilms tumor.
Postoperative radiation therapy showed minimal tumor regression and no significant neurological improvement.

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Implications:

This case represents a rare instance of intradural spinal metastasis from an intracerebral Wilms tumor.
The optimal treatment strategy for spinal Wilms tumor metastases remains uncertain.
Radiation therapy may have limited efficacy in treating such rare metastatic presentations.