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Ectopic extraspinal meningioma: CT and MR appearance
L A Christopherson1, D A Finelli, J Wyatt-Ashmead
1Department of Radiology, MetroHealth Medical Center/Case Western Reserve University School of Medicine, Cleveland, Ohio 44109, USA.
AJNR. American Journal of Neuroradiology
|August 1, 1997
Summary
A rare ectopic, extraspinal meningioma presented as a midline back mass in a teenage girl. Radiologically, it mimicked osteogenic sarcoma due to calcification and bone changes.
Area of Science:
- Neurosurgery
- Pediatric Oncology
- Radiology
Background:
- Ectopic meningiomas are rare tumors that can occur outside the central nervous system.
- Extraspinal meningiomas are particularly uncommon, with few reported cases in pediatric patients.
- Midline interscapular masses require careful differential diagnosis.
Observation:
- A 13-year-old female presented with a midline interscapular mass.
- The mass involved the T-2 and T-3 spinous processes, located dorsal to the lamina.
- The tumor was entirely extrinsic to the spinal canal.
Findings:
- The mass demonstrated extensive tumoral calcification.
- Significant reactive hyperostosis of the involved spinous processes was noted.
- Radiological imaging mimicked features of osteogenic sarcoma.
Implications:
- This case highlights the importance of considering ectopic meningioma in the differential diagnosis of pediatric spinal masses.
- Extensive calcification and hyperostosis can lead to misdiagnosis, emphasizing the need for thorough radiological assessment.
- Surgical management and histopathological confirmation are crucial for accurate diagnosis and treatment planning.