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Primary extracranial meningioma of paranasal sinuses
Ranjan G Aiyer1, V Prashanth2, Kirti Ambani2
1Department of E.N.T & Head-Neck Surgery, S.S.G. Hospital & Medical College, 390007 Baroda, Gujarat India ; 3/2 Jesal Apartment, Abhishek Colony, Race Cource, Vadodara, 390007 Baroda, Gujarat India.
Abstract:
Meningioma is the most common nonglial intracranial neoplasm, arising from meningocytes (arachnoid cap cells) of arachnoid granulation tissue and constitutes 15-20 % of all intracranial tumors. Approximately 6-17 % of all meningiomas can be found in extracranial or extra spinal sites. The head and neck is the most frequent location of extraneuraxial meningiomas, commonly seen as an extension of primary intracranial tumor (secondary extracranial meningioma). Less than 2 % of all meningiomas arise at a primary ectopic site (primary extracranial meningioma). Meningioma of nose and paranasal sinuses is a very rare tumor. The overall incidence is about 0.1 % of all tumors in the nose and sinuses. To date, very few cases of this primary extracranial meningioma of paranasal sinuses have been reported. In this report we are going to present three rare cases of primary extracranial meningioma of paranasal sinuses operated in our department over a period of 22 years (1986-2008).
Insights
Primary meningiomas in the nose and paranasal sinuses are extremely rare, accounting for less than 0.1% of sinonasal tumors. This report details three such cases, highlighting their rarity and surgical management.
Area of Science:
- Neurosurgery
- Otolaryngology
- Pathology
Background:
- Meningioma is the most common nonglial intracranial neoplasm, representing 15-20% of all intracranial tumors.
- Extracranial meningiomas constitute 6-17% of all meningiomas, with the head and neck being the most common site.
- Primary extracranial meningiomas, arising from ectopic sites, are exceptionally rare, comprising less than 2% of all meningiomas.
Purpose of the Study:
- To report three rare cases of primary extracranial meningioma of the paranasal sinuses.
- To emphasize the rarity of sinonasal meningiomas and discuss their surgical treatment.
- To contribute to the limited literature on primary ectopic meningiomas in this location.
Main Methods:
- Retrospective review of three cases of primary sinonasal meningioma operated between 1986 and 2008.
- Surgical excision of the tumors.
- Pathological confirmation of meningioma diagnosis.
Main Results:
- Three cases of primary extracranial meningioma of the paranasal sinuses were identified and surgically treated over a 22-year period.
- These tumors are exceedingly rare, with an incidence of approximately 0.1% of all sinonasal tumors.
- The study highlights the challenges and outcomes associated with the surgical management of these rare neoplasms.
Conclusions:
- Primary meningiomas of the paranasal sinuses are exceptionally rare tumors.
- Surgical intervention is the primary treatment modality for these lesions.
- Further case reports are valuable for understanding the clinical behavior and optimal management of sinonasal meningiomas.
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