Concha bullosa that is a pneumatization of the middle turbinate is a common anatomic variant; the obstruction of its ostium may lead to mucocele and even pyocele after infection of retained secretion. Although the condition is rare, mucopyocele of concha bullosa may be presented as a large nasal mass. However, the diagnosis could be suspected from its characteristic radiologic signs. We present an adolescent boy with mucopyocele of the concha bullosa.
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