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KMID : 1039520160200020120
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Journal of Audiology & Otology
2016 Volume.20 No. 2 p.120 ~ p.122
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a Solitary Fibrous Tumor in the External Auditory Canal Benign?
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Lee Chi-Kyou
Lee Hyun-Ju
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Abstract
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A solitary fibrous tumor (SFT) is an extremely rare, distinct otological soft-tissue tumor. Only two such tumors in the external auditory canal have been reported. A SFT related to hemangiopericytomas (HPC), which commonly arise in the central nervous system. HPCs act malignant in many cases, while SFTs at other sites are mainly benign. A 25-year-old female presented with highly vascular tumor at the right external auditory meatus and bleeding from the mass when a crust was removed from its surface. After excisional biopsy followed by pre-operative embolization, this tumor confirmed with SFT. The recurrence rate of SFT is very low after complete resection, with a slightly increased risk of recurrence with extrathoracic tumors. We describe the third case of SFT in the external auditory canal and review the literature.
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KEYWORD
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External auditory canal, Solitary fibrous tumor, Hemangiopericytoma
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