A case of dysplastic nevus of the external auditory canal presenting with conductive hearing loss.
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.
Kim
Chang Woo
CW
Department of Otorhinolaryngology-Head and Neck Surgery, College of Medicine, Hallym University, Seoul, Korea. kcw5088@dreamwiz.com
Oh
So Jung
SJ
Rho
Young-Soo
YS
Cho
Seong Jin
SJ
Koh
Eun Seok
ES
D000328:Adult; D004416:Dysplastic Nevus Syndrome / Q000175:diagnosis* / Q000473:pathology* / Q000601:surgery; D004424:Ear Canal / Q000473:pathology* / Q000601:surgery; D005260:Female; D006314:Hearing Loss, Conductive / Q000209:etiology* / Q000601:surgery; D006801:Humans; D016896:Treatment Outcome