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CASE HISTORY / CLINIC:
45-year-old patient with muffled voice.



FINDINGS:
The axial CT scan at bony window (upper image) demonstrates a mass in both the left and right nasal cavities and in the nasopharynx. The mass obstructs the drainage of the left maxillary sinus thus causing collection of secretion .
Secondary finding: dental germs behind both maxillary sinuses. The mass is viewed between the pterygoid processes in the coronal scan at bony window (lower picture); it fills up the whole nasopharynx.



DIAGNOSIS:
Choanal polyp

DIFFERENTIAL DIAGNOSIS:
Inverted papilloma, Lymphoma



Suggestions for further reading:

1) Roche Lexikon Medizin