Presentation
Nasal obstruction
Patient Data
Age: 50 years
Gender: Male
From the case:
Antrochoanal polyp
![](https://prod-images-static.radiopaedia.org/images/51653225/caaa94a11f461a923a4a3aa5ce1009_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/51653251/cb126b5f8ec089b2d1d061759ba895_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/51653273/dffbe0f14c3699f65a40514a2f793e_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
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Info
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There is a well-defined mass arising from the right maxillary sinus and extending into the nasopharynx through an enlarged maxillary ostium.
Case Discussion
CT features of an antrochoanal polyp (ACP).