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Antrochoanal polyp

Case contributed by Azza Elgendy
Diagnosis almost certain

Presentation

Opacified left maxillary sinus.

Patient Data

Age: 60 years
Gender: Female
mri

An antrochoanal polyp is seen arising from the left maxillary sinus extending through a widened, smoothly remodeled meatus to fill the whole ipsilateral nasal cavity and the nasopharynx. 

The polyp is homogenous T2 hyperintense and T1 isointense with smooth peripheral enhancement on T1C+.

The remainder ipsilateral sinuses are opacified by retentional phenomenon. There is no restricted diffusion.

A small retension cyst is seen in the right maxillary sinus.

Case Discussion

 

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