Abstract
Giant schwannomas concomitantly involving the intracranial and nasal cavities are rare. We report a 22-year-old male patient with a giant schwannoma involving the frontal skull base and extending into the nasal cavity. The patient had a 2-year history of nasal obstruction that was originally misdiagnosed as nasal polyps. A CT scan and an MRI revealed a large cranionasal tumor. Surgery was performed using a coronal incision with a bilateral frontal skull base extradural approach. The tumor originated from the anterior skull base and the dura and nasal mucosa were intact. Histopathology was consistent with a schwannoma. Schwannoma should be listed as part of the differential diagnosis of a cranionasal tumor and the surgical approach should be carefully selected to achieve total resection.
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