Department of Otolaryngology - Head & Neck Surgery, Stanford University School of Medicine, 801 Welch Road, Palo Alto, CA 94304, USA.
Department of Otolaryngology - Head & Neck Surgery, Stanford University School of Medicine, 801 Welch Road, Palo Alto, CA 94304, USA.
Otolaryngol Clin North Am. 2023 Oct;56(5):897-908. doi: 10.1016/j.otc.2023.06.013. Epub 2023 Aug 5.
Keratosis obturans (KO) and external auditory canal cholesteatoma (EACC) are two distinct keratinaceous lesions of the external ear. This article reviews the signs, symptoms, pathophysiology, workup, and treatment of each. Patients with either pathology can often be managed in the clinic with debridement; however, EACC is more likely to involve osteonecrosis and require more extensive operative management if disease is not confined to the canal on account of the bony erosion characteristic of cholesteatoma. If required for extensive disease, surgical approaches to both pathologies are similar.
角化过度症（KO）和外耳道胆脂瘤（EACC）是外耳两种不同的角化性病变。本文回顾了这两种病变的体征、症状、病理生理学、检查和治疗。这两种病变的患者通常都可以在诊所进行清创治疗；然而，如果胆脂瘤的特征性骨侵蚀导致疾病不限于耳道，EACC 更有可能涉及骨坏死，并需要更广泛的手术治疗。如果需要广泛治疗，这两种病变的手术方法相似。
