Right nasopharyngeal mass. There is a midline subcentimeter cystic lesion in the nasopharynx. There is also mild asymmetric thickening of the mucosa within the right fossa of Rosenmuller, but no evidence of a discrete tumor. There is no evidence of retropharyngeal or cervical lymphadenopathy. Indeed, a right lateral retropharyngeal lymph node measures 4 mm in short axis. The skull base and prevertebral space appear to be intact. The thyroid and major salivary glands are unremarkable. The imaged intracranial structures and orbits are unremarkable.
1. Mild asymmetric thickening of the mucosa within the right fossa of Rosenmuller is nonspecific, but could represent early nasopharyngeal carcinoma versus inflammation, for example.2. A midline subcentimeter cystic lesion in the nasopharynx may represent a retention cyst of Thornwaldt cyst. 