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Exostosis or hyperostosis of the external auditory canal (swimmer’s ear)

It is a not uncommon pathology of the external auditory canal, in which there is a growth of the bony part of the canal, sometimes in a localized form (as in “pigeon’s nest”) or in all its perimeter. The pathophysiological mechanism is not clear, but it is more frequent in people in contact with cold water (swimmers, surfers). It is also observed in people subjected to pressure changes (divers, pilots, flight attendants). Due to the narrowing of the duct, it is easier for cerumen or flaking skin to accumulate, favoring its obstruction and the presence of otitis externa due to retained water. In exceptional cases, the duct may become totally obstructed, producing a hypoacusis or obstructive deafness, which would require surgery to solve the problem.