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A Case of Intracranial Meningioma Extending to the Middle Ear
Dept. of Otorhinolaryngology, Keimyung Univ. Dongsan Hosp.
Ju-hyung JEONG, Ju-hyung JEONG, Ho-joon JANG, Soon-hyung Park, Sung-il NAM
Meningiomas represent up to 18% of all intracranial tumors and approximately 3% of CPA tumors, benign but locally aggressive tumors. Meningiomas extending to the middle ear cavity are uncommom and these patients complain of otologic symptoms such as hearing loss, ear fullness, or otorrhea. The gross appearance typically is that of a globular mass firmly adherent to the dura mater, with characteristic speckles scattered throughout the tumor. Audiovestibular symptoms usually are the first indication of a posterior fossa meningioma. Clinical findings frequently suggest otitis media resistant to conventional treatments, thereby facilitating misdiagnosis. On CT, approximately two thirds of meningiomas are hyperintense relative to the brain. Meningiomas are homogeneous and occasionally calcified. They show homogeneous enhancement with iodine infusion, which usually permits differentiation from acoustic neuromas. In this report, we describe a case of middle ear meningioma originating from middle and posterior cranial fossa with a review of the literatures


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