This is a posterior nasopharyngeal cyst. It is common and benign. It is filled with proteinaceous material that will intermittently discharge its contents, causing halitosis and a bad taste. They rarely become infected.

•  High-attenuation (due to protein content) nasopharyngeal cyst


•  Thin-walled cyst
•  High signal on T1 and T2 (protein content)
•  No enhancement


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