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J Neurosurg Spine. 2016 Jun;24(6):937-40. doi: 10.3171/2015.11.SPINE141304. Epub 2016 Feb 12.

Ectopic ganglion in cauda equina: case report.

Author information

1
Departments of 1 Neurosurgery and.
2
Pathology, University of Oklahoma Health Sciences Center, Oklahoma City, Oklahoma.

Abstract

Macroscopic ectopic or heterotopic ganglionic tissue within the cauda equina is a very rare pathological finding and is usually associated with spinal dysraphism. However, it may mimic genuine neoplasms of the cauda equina. The authors describe a 29-year-old woman with a history of back pain, right leg pain, and urinary incontinence in whom imaging demonstrated an enhancing mass located in the cauda equina at the L1-2 interspace. The patient subsequently underwent biopsy and was found to have a focus of ectopic ganglionic tissue that was 1.3 cm in greatest dimension. To the authors' knowledge, ectopic or heterotopic ganglionic tissue within the cauda equina in a patient without evidence of spinal dysraphism has never been reported. This patient presented with imaging and clinical findings suggestive of a neoplasm, and an open biopsy proved the lesion to be ectopic ganglionic tissue. The authors suggest that ectopic ganglionic tissue be added to the list of differential diagnoses of a space-occupying lesion arising from the cauda equina.

KEYWORDS:

cauda equina tumors; ectopic dorsal root ganglion; ectopic ganglion; lumbar; paraganglioma; spinal oncology

PMID:
26871650
DOI:
10.3171/2015.11.SPINE141304
[Indexed for MEDLINE]

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