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Benign Sacral Metastatic Meningioma: A Rare Entity
Michael J Strong1, Juanita Garces2, Wendell Tang3
1Department of Pathology, Tulane University School of Medicine, New Orleans, LA ; Tulane Cancer Center, Tulane University School of Medicine, New Orleans, LA.
Ochsner Journal
|July 2, 2015
Summary
This case study highlights a rare instance of histologically benign intracranial meningioma metastasizing to the sacrum. Despite benign histology, the tumor recurred and spread, emphasizing the need for vigilance in meningioma management.
Area of Science:
- Neuro-oncology
- Pathology
Background:
- Meningiomas are common primary brain tumors.
- Metastasis from meningiomas is rare and often associated with malignant histology.
- Benign meningiomas rarely metastasize.
Observation:
- A 57-year-old female presented with a histologically benign intracranial meningioma.
- The patient experienced multiple recurrences of benign intracranial meningioma.
- A secondary, histologically benign meningioma was discovered in the sacrum.
Findings:
- The intracranial meningioma showed no signs of malignancy despite recurrences.
- The sacral meningioma was also histologically benign.
- Radiotherapy was administered for the sacral metastasis, and the intracranial tumor was resected.
Implications:
- This case underscores that histologically benign meningiomas can exhibit metastatic behavior.
- It highlights the importance of considering metastasis even with benign tumor histology.
- Long-term surveillance may be warranted for patients with recurrent benign meningiomas.

