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Meningioangiomatosis associated with meningioma: a case report
Ali Saad1, Rebecca Folkerth, Tina Poussaint
1Department of Pathology, Children's Hospital, Boston, Massachusetts 02115, USA. ali.saad@childrens.harvard.edu
Background:
Meningioangiomatosis is a meningovascular disorder that only rarely occurs in association with a meningioma. Occasionally, as in this case, imaging studies do not readily identify this disorder as a benign process. In addition, this disorder may infiltrate the underlying cerebral cortex, simulating, intraoperatively, a malignant infiltrative process. To allow better recognition of this disorder, we report a case with emphasis on the unique cytologic features of the 2 components (meningioangiomatosis and meningioma) and potential pitfalls in diagnosis.
Case:
A 3-year-old girl was examined in the neurosurgery service for history of refractory seizure. Neuroimaging showed an ill-defined signal abnormality in the left frontal lobe suggestive of a high-grade tumor. Tumor resection was performed, and intraoperative smear preparation showed meningioangiomatosis associated with meningioma.
Conclusion:
Familiarity with cytologic preparations of this rare variant is very important in providing accurate intraoperative consultation. To our knowledge, this is the first description of the cytologic features on smear preparation of meningioangiomatosis occurring in association with meningioma.
Insights
Meningioangiomatosis rarely occurs with meningioma, presenting diagnostic challenges. This case highlights unique cytologic features for accurate intraoperative diagnosis of this rare brain tumor variant.
Area of Science:
- Neuropathology
- Neurosurgery
- Cytopathology
Background:
- Meningioangiomatosis is a rare meningovascular disorder.
- It infrequently co-occurs with meningioma.
- Imaging may not distinguish it from malignant processes due to cortical infiltration.
Observation:
- A 3-year-old girl presented with refractory seizures.
- Neuroimaging revealed an ill-defined left frontal lobe abnormality.
- Intraoperative smears showed coexisting meningioangiomatosis and meningioma.
Findings:
- This case details the cytologic features of meningioangiomatosis and meningioma.
- It emphasizes diagnostic pitfalls in differentiating benign from malignant-appearing lesions.
- This is the first description of cytologic features on smear preparation for this combined entity.
Implications:
- Familiarity with these cytologic features is crucial for accurate intraoperative consultation.
- Improved recognition aids in appropriate surgical management of this rare condition.
- Understanding these features can prevent misdiagnosis as a high-grade tumor.
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