Pediatric atypical teratoid/rhabdoid tumor in the cauda equina with rapid tumor progression: illustrative case
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Updated: May 6, 2026
Intraoperative Ultrasound in Spinal Surgery
Published on: August 17, 2022
Takahiro Tsuchiya1, Makoto Ohno1, Yuko Watanabe2
1Departments of Neurosurgery and Neuro-Oncology, National Cancer Center Hospital, Tokyo, Japan.
Background:
Atypical teratoid/rhabdoid tumor (AT/RT) is an uncommon malignant neoplasm and rarely occurs in the spinal space, especially in the cauda equina. Only 8 cases of pediatric AT/RT of the cauda equina have been reported. Therefore, its clinical behavior and optimal treatment remain unclear.
Observations:
The authors describe the case of a 9-year-old boy who presented with progressive back and left leg pain. Initial magnetic resonance imaging showed an intradural extramedullary lesion at the L3-4 level, which progressed rapidly to the L2-5 level within a month. He underwent partial resection of the tumor with an L2-5 laminectomy. The histopathological diagnosis was AT/RT. He received adjuvant chemotherapy and radiotherapy, and his gait disturbance improved postoperatively. At 6 months' follow-up, disease recurrence was not observed.
Lessons:
Although extremely rare, AT/RT should be included in the differential diagnosis for prompt therapeutic intervention. Safe resection with minimal functional impairment, followed by postoperative chemoradiation, can lead to tumor control and improve neurological function. https://thejns.org/doi/10.3171/CASE24219.
