Ear, Nose, And Throat Disorders Chapter 87. A rare cyst located in the midline of the nasopharynx that may become infected. Tornwaldt's cyst is superficial to the superior constrictor muscle of the pharynx and is covered by the mucous membrane of the nasopharynx. If infected, it may cause persistent purulent drainage with a foul taste and odor, eustachian tube obstruction, and sore throat. Purulent exudate may be seen at the opening of the cyst.
Treatment consists of marsupialization or excision.
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