Diagnostic challenges of sinonasal extracranial meningiomas: A case report
Keywords:
sinonasal meningiomas, differential diagnosis, diagnostic pitfalls, skull base tumors, meningioma misdiagnosis, extracranial neoplasms, sinonasal tract tumors, ct/mri sinonasal meningiomas, histopathology sinonasal meningiomasAbstract
Background and aim: Meningiomas, the most prevalent non-glial intracranial neoplasms, exhibit different biological features and are typically identified with a characteristic dural tail sign on MRI. However, a subset, approximately 7-16% can manifest extracranially. This case report presents a 70-year-old-woman with nasal dyspnea and intermittent epistaxis due to an ectopic meningioma originating from the nasal cavity, a rare extracranial location. Additionally, a thorough review of the relevant literature was conducted.
Methods: Radiological imaging, including maxillofacial CT and MRI, revealed a solid tissue occupying the left nasal cavity, having its origin in middle turbinate. The patient underwent endoscopic sinus surgery (ESS), leading to the histological diagnosis of a WHO grade I meningothelial meningioma with psammomatous bodies. Follow- up at 3-6-12 months showed no recurrence.
Results: Extracranial meningiomas constituting less than 1% of non-epithelial tumors, often mimic other sinonasal masses, posing diagnostic challenges. Comprehensive radiological investigation, complete surgical removal, and thorough histopathological examination are crucial for accurate diagnosis and effective treatment planning.
Conclusions: This report and literature review emphasizes the importance of preoperative diagnostic-instrumental paths and highlight specific radiological patterns for differential diagnosis, contributing to the understanding and the management of this rare presentation of meningiomas
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