Stenosis of the external auditory canal Acquired stenosis of the external ear canal Stenosis or narrowing of the external ear canal (EAC) occurs lateral to the tympanic membrane resulting in a skin lined blind canal. Acquired medial canal fibrosis Acquired stenosis of the external ear canal typically presents as recurrent otorrhea, conductive hearing loss, often with significant cerumen impaction and ear canal cholesteatoma. Different etiologies such as chronic otitis externa, dermatologic diseases, iatrogenic (previous ear surgery or radiotherapy) or accidental rauma, tumor and inflammation lead to scarring/fibrosis and subsequent stenosis of the ear canal. UMLS:C4022438 Cutaneous stenosis of the external auditory canal Medial meatal fibrosis Obliterative otitis externa