Jacobson’s Nerve Schwannoma Presenting as Middle Ear Mass

Summary: Schwannoma is one of the common benign mid-dle ear space tumors. Middle ear space schwannomas may originate from the nerves of the tympanic cavity or by ex-tensions from outside the middle ear space. In the English-language literature, the facial nerve and chorda tympani nerve, but not yet the tympanic branch of glossopharyngeal nerve (Jacobson’s nerve), have been reported as the origins of intrinsic middle ear space schwannomas. We present the clinical and radiologic features of a middle-space schwan-noma originating from Jacobson’s nerve, and suggest that such a tumor be included in the differential diagnosis of middle ear tumors. Tumor and tumorlike conditions of the middle ear include hemangioma, meningioma, cholesterol granuloma, primary cholesteatoma, adenomatou