Bilateral External Ear Canal Duplication: A Case Report.

Landon E Ebbert, David Crockett, Nathan C Page, Joshua L Ebbert, Grace Amoo-Quaye, Nana Andoh Mensah Hanson, Peter Appiah-Thompson
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Abstract

Herein described is an eight-year-old female patient presenting with bilateral external ear canal duplication and a history of recurrent postauricular abscesses, otorrhea, and moderate left-sided conductive hearing loss. Previous incision and drainage of the postauricular abscesses yielded little long-term success. Medical history was otherwise unremarkable. Physical examination revealed a cystic mass in the right ear and postauricular fibrosis, likely a result of previous surgical interventions. An audiogram revealed asymmetric hearing function, with mild-to-moderate conductive hearing loss in the left ear contrasting normal hearing in the right ear, while tympanometry confirmed an intact right tympanic membrane but was precluded on the left due to purulent otorrhea. A head CT scan revealed postauricular soft tissue swelling and well-pneumatized mastoid air cells. Both ears were explored intraoperatively via postauricular incisions. Surgical excision included removal of a cyst, cartilaginous remnants, and fibrotic tissue. The patient was followed up to assess for postsurgical complications. The surgical site healed uneventfully; no new symptoms or recurrences of past symptoms of otorrhea, cyst formation, or abscesses had developed within the twelve weeks post-surgery. Although external ear canal duplications are rare, it is imperative that early, accurate diagnoses be made to ensure optimal patient outcomes.

双侧外耳道重复1例。
本文报告一名八岁的女性患者,表现为双侧外耳道重复,耳后脓肿复发,耳漏和中度左侧传导性听力损失。以往耳后脓肿的切开和引流很少取得长期成功。除此之外,病史没有什么特别之处。体格检查显示右耳囊性肿块和耳后纤维化,可能是先前手术干预的结果。听音图显示听力功能不对称,左耳有轻度至中度传导性听力损失,右耳听力正常,而鼓膜测量证实右鼓膜完整,但由于化脓性耳漏,左鼓膜被排除。头部CT扫描显示耳后软组织肿胀和充气性良好的乳突空气细胞。术中通过耳后切口探查双耳。手术切除包括囊肿、软骨残余和纤维化组织的切除。对患者进行随访以评估术后并发症。手术部位愈合顺利;术后12周内未出现新的症状或既往耳漏、囊肿形成或脓肿症状复发。虽然外耳道重复是罕见的,早期,准确的诊断是必要的,以确保最佳的患者结果。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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