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KMID : 0311120090500060845
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Yonsei Medical Journal
2009 Volume.50 No. 6 p.845 ~ p.847
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A Case of Dysplastic Nevus of the External Auditory Canal Presenting with Conductive Hearing Loss
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Kim Chang-Woo
Oh So-Jung
Rho Young-Soo
Koh Eun-Seok
Cho Seong-Jin
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Abstract
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A nevus which is a benign melanocytic neoplasm rarely occurs within the external auditory canal (EAC). A dysplastic nevus presents atypical features both clinically and histologically, and is important as a potential precursor for melanoma. We present a case of a 33-year-old female patient with a dysplastic nevus in her EAC. Physical examination revealed a protruding mass arising from the posterior wall of the left cartilaginous EAC. The mass showed clinically characteristic findings of a melanocytic nevus. The patient underwent excisional biopsy via a transcanal approach under local anesthesia. Histopathological examination revealed an intradermal nevus with atypical melanocytes without pleomorphism. There was no evidence of recurrence two years after surgical excision.
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KEYWORD
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External auditory canal, dysplastic nevus, intradermal nevus, conductive hearing loss
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