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Diagnosis: Hemorrhagic vestibular schwannoma
Schwannomas arise from neural crest–derived Schwann cells and represent approximately 5% to 8% of all intracranial tumors.1They can originate in any sympathetic, peripheral, or cranial nerve except the olfactory and optic nerves, which lack Schwann cells. Most schwannomas are sporadic, and there is a high incidence of schwannomas in patients with type 2 neurofibromatosis.
Radiology Quiz Case 2: Diagnosis. Arch Otolaryngol Head Neck Surg. 2010;136(8):838–839. doi:10.1001/archoto.2010.126-b
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