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SEER Inquiry System - Report
Produced: 06/01/2026 8:15 AM
Question 20170002
Inquiry Details
References:
2016 SEER Manual, 6
Question:
Reportability--Brain and CNS: Are cavernous sinus meningiomas reportable? See Discussion.
Discussion:
Per SINQ 20160068, sphenoid wing meningiomas are reportable (unless stated to be intraosseous) because they arise from the meninges overlying or along the sphenoid wing/sphenoid bone. These are intracranial and not intraosseous meningiomas.
Therefore, wouldn't this logic also apply to cavernous sinus meningiomas? These are tumors that arise from the meninges of an intracranial space, not from bone or soft tissue. The cavernous sinus is a "true dural venous sinus" within the skull. While not specifically about meningiomas, SINQ 20071095 states a benign tumor in the cavernous sinus is coded to C490. This SINQ would still seem valid for a benign tumor like a blood vessel tumor, but not for a meningioma that doesn't arise from soft tissue or blood vessels.
Answer:
Cavernous sinus meningiomas are reportable, as the meningioma arises in the meninges unless stated otherwise. This is similar to sphenoid wing meningiomas.
