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Abstract:
Meningiomas originating in the paranasal sinuses are rare. These tumors are thought to arise from embryonal arachnoid nests which were pinched off and left behind during embryonic development. We have described various radiographic findings of two patients with meningioma arising in the paranasal sinuses (frontal sinus origin in a 65-year-old female, and sphenoid sinus origin in a 26-year-old female). The paranasal origin of meningioma was accurately determined on the basis of CT and arteriography. A review of the 11 cases previously reported and our cases indicates that there are no specific clinical or radiographic findings of meningiomas of the paranasal sinuses.
Insights
Meningiomas rarely originate in the paranasal sinuses, possibly from embryonic arachnoid nests. Radiographic findings, including CT and arteriography, are crucial for diagnosis but lack specificity for these rare tumors.
Area of Science:
- Neurosurgery
- Radiology
- Pathology
Background:
- Meningiomas are tumors that arise from the meninges, the membranes surrounding the brain and spinal cord.
- Paranasal sinus meningiomas are exceptionally rare, with origins hypothesized to be embryonal arachnoid nests.
- Understanding the diagnostic challenges of these rare tumors is critical for effective patient management.
Observation:
- This study details two cases of paranasal sinus meningioma: one in the frontal sinus (65-year-old female) and another in the sphenoid sinus (26-year-old female).
- Computed tomography (CT) and arteriography were utilized to accurately determine the paranasal origin of the meningiomas.
- Radiographic findings in these cases, alongside a review of 11 previously reported cases, were analyzed.
Findings:
- The study found no distinct clinical or radiographic features specific to meningiomas originating in the paranasal sinuses.
- Diagnostic imaging, including CT and arteriography, is essential for localizing the tumor and confirming its paranasal sinus origin.
- The rarity and lack of specific diagnostic markers present challenges in the early identification of these tumors.
Implications:
- Accurate diagnosis relies on advanced imaging techniques like CT and arteriography, despite the absence of pathognomonic signs.
- Further research into the specific etiology and potential early diagnostic indicators for paranasal sinus meningiomas is warranted.
- Enhanced awareness among clinicians regarding the possibility of meningiomas in the paranasal sinuses is crucial for timely diagnosis and treatment.