Jacobson's nerve schwannoma presenting as middle ear mass

Schwannoma is one of the common benign middle ear space tumors. Middle ear space schwannomas may originate from the nerves of the tympanic cavity or b y extensions From outside the middle ear space. In the English-language lit erature, the facial nerve and chorda tympani nerve, but not yet the tympani c branch of glossopharyngeal nerve (Jacobson's nerve), have been reported a s the origins of intrinsic middle ear space schwannomas. We present the cli nical and radiologic features of a middle-space schwannoma originating from Jacobson's nerve, and suggest that such a tumor be included in the differe ntial diagnosis of middle ear tumors.