It can be confused for EAC cholesteatoma but they are completely different entities requiring different treatment. Patients present with acute severe pain and conductive hearing loss. Usually treated by EAC toilet; due to a high incidence of recurrence, it may require several excisions of keratin plugs. It rarely needs surgical intervention. Please Note: You can also scroll through stacks with your mouse wheel or the keyboard arrow keys.

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Keratosis obturans and external auditory canal cholesteatoma EACC have previously been considered to represent the same disease process. However, review of the literature and our cases reveal these to be two different clinical and pathological processes. Keratosis obturans presents as hearing loss and usually acute, severe pain secondary to the accumulation of large plugs of desquamated keratin in the ear canal.

External auditory canal cholesteatoma presents as otorrhea with a chronic, dull pain secondary to an invasion of squamous tissue into a localized area of periosteitis in the canal wall. The treatment previously recommended for both of these conditions has been conservative debridement of the external canal and application of topical medication. While this remains the treatment of choice for keratosis obturans, surgery may be required to eradicate EACC. This site needs JavaScript to work properly.

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Sismanis A, et al. Am J Otol. PMID: External auditory canal cholesteatoma and keratosis obturans: the role of imaging in preventing facial nerve injury. McCoul ED, et al. Ear Nose Throat J. Clinical characteristics of keratosis obturans and external auditory canal cholesteatoma. Park SY, et al. Otolaryngol Head Neck Surg. Epub Nov Keratosis obturans and external ear canal cholesteatoma: how and why we should distinguish between these conditions.

Persaud RA, et al. Clin Otolaryngol Allied Sci. PMID: Review. Therapeutic approaches to complicated cholesteatoma of the external auditory canal: a case of associated facial paresis. Belcadhi M, et al. Show more similar articles See all similar articles.

Singh A, et al. Turk Arch Otorhinolaryngol. Epub Jun 1. Alarouj H, et al. Case Rep Otolaryngol. Juliano AF. Head Neck Pathol. Epub Aug 1. Maharjan L, Rayamajhi P. Maharjan L, et al. Epub Dec Thompson C, et al. BMJ Case Rep. Show more "Cited by" articles See all "Cited by" articles. Publication types Case Reports Actions. MeSH terms Adult Actions. Aged Actions.

Cerumen Actions. Debridement Actions. Diagnosis, Differential Actions. Female Actions. Humans Actions. Male Actions. Middle Aged Actions. Suppuration Actions. Full-text links [x] Wiley. Copy Download.


Keratosis obturans

Keratosis obturans is a relatively uncommon ear disease, where dense plug of keratin is present in the deep meatus of the ear. It is clinically diagnosed when removal of the debris shows silvery white peripheral matrix and causes excruciating pain. Keratosis obturans was first properly described by Wreden of St. Petersburg in , who differentiated this condition from impacted wax. The most common symptoms are hearing loss and severe pain secondary to the accumulation of keratin in the ear canal.


Keratosis Obturans and External Auditory Canal Cholesteatoma

Keratosis obturans and external ear canal cholesteatomas have been considered as separate entities for the last 20 years, after being regarded as variations of the same disease for at least 87 years. While both disorders are distinct, they do have some overlapping characteristics which may make it difficult to reach a definite diagnosis. This review explores the diagnostic dilemmas which may arise, and discusses the classification, aetiology, pathogenesis and management of these conditions. We concur that external ear canal cholesteatoma and keratosis obturans are different conditions and conclude that the presence of osteonecrosis and focal overlying epithelial loss are the most reliable features favouring the diagnosis of external ear canal cholesteatoma over keratosis obturans.

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