Abstract
Subfrontal schwannomas arising from the olfactory groove are rare and their origin remains uncertain because olfactory bulbs do not possess Schwann cells. We present two cases of subfrontal schwannomas treated with surgical resection. In one case, the tumor was located between the endosteal and meningeal layers of the dura mater. This rare case suggests that subfrontal schwannomas may originate from the fila olfactoria.
MeSH terms
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Adult
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Cranial Fossa, Anterior / pathology*
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Cranial Fossa, Anterior / surgery*
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Cranial Nerve Neoplasms / pathology*
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Cranial Nerve Neoplasms / surgery*
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Diagnosis, Differential
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Dura Mater / pathology*
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Dura Mater / surgery*
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Humans
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Magnetic Resonance Imaging
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Male
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Meningeal Neoplasms / pathology*
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Meningeal Neoplasms / surgery*
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Neurilemmoma / pathology*
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Neurilemmoma / surgery*
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Optic Nerve Diseases / pathology*
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Optic Nerve Diseases / surgery*
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Skull Neoplasms / pathology*
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Skull Neoplasms / surgery*
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Tomography, X-Ray Computed