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Antrochoanal polyp

Case contributed by Shervin Sharifkashani
Diagnosis almost certain

Presentation

Right side nasal cavity obstruction and nasal speech.

Patient Data

Age: 40 years
Gender: Male
ct

Large mass-like lesion within the right maxillary sinus opacified and expanded the sinus antrum with growth within the sinus ostium, expanded the ostium and extended within the right side nasal cavity middle and inferior meatus, and bulged within the ipsilateral nasopharynx is seen.

Case Discussion

The case illustrates typical non-contrast CT scan features of an antrochoanal polyp. One of the complications of the antrochoanal polyp is papillary endothelial hyperplasia which can lead to hemorrhage. The polyp has usually a narrow pedicle but rarely can be seen on CT scan images. The treatment of choice is complete surgical resection of the pedicle.

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