Presentation
Right nasal obstruction.
Patient Data
Age: 30 years
Gender: Male
From the case:
Antrochoanal polyp
![](https://prod-images-static.radiopaedia.org/images/60162351/81c77d6239ab3e0ae0efea6750b9151392e472689e967c4124022978f97366bf_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/60161990/3c59cffb9a6d1d05b4ab2761c533cdbf6ca10d0487f0c741cadf04630a2d7b99_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/60162523/0c6a8e32006d770d44df52fe081f3117034f5483c193c3f3649778ad71968aa3_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
![](https://prod-images-static.radiopaedia.org/images/60162623/1d4d3590349fc5ebc33f5dc78661186441f62e6125cf65bb4ae93d676a8fe63d_thumb.jpeg)
![This study is a stack](/packs/stack-YQKLCKBI.gif)
Download
Info
![](https://prod-images-static.radiopaedia.org/images/60162351/81c77d6239ab3e0ae0efea6750b9151392e472689e967c4124022978f97366bf_big_gallery.jpeg)
Well-defined polypoid mass arising from the right maxillary sinus, extending into the nasopharynx through an enlarged maxillary ostium. No associated bony destruction is seen.
Deviated nasal septum to the left.
Case Discussion
CT features of an antrochoanal polyp.