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KMID : 1037420170120020013
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Journal of Korean Skull Base Society
2017 Volume.12 No. 2 p.13 ~ p.17
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Treatment strategy of modified Fisch class A and B paragangliomas
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Shin Seung-Ho
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Abstract
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Though paragangliomas are benign tumors which originate from the jugular bulb or tympanic cavity, it is not easy to remove them due to their vascularity. Because the treatment for tympanic paragangliomas is not well-established, their classification and treatment strategy will be described. Tympanic paragangliomas are classified as A1, A2, B1, B2 and B3 through modified Fisch classification. A transcanal approach is recommended for A1 tumor. A retroauricular transmastoid approach is preferred for A2 tumor. For B1 tumor, a canal wall up mastoidectomy and facial recess approach supplies a sufficient surgical field. For B2 tumor, an extended facial recess approach is required. For B3 tumor, subtotal petrosectomy is essential.
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KEYWORD
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Ear, Paraganglioma, Vascular neoplasms
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