Presentation
Inspiratory difficulty and sleep apnea.
Patient Data
Age: 20 years
{"current_user":null,"step_through_annotations":true,"access":{"can_edit":false,"can_download":true,"can_toggle_annotations":true,"can_feature":false,"can_examine_pipeline_reports":false,"can_pin":false},"extraPropsURL":"/studies/35202/annotated_viewer_json?lang=us"}
A low-density mass filling the right maxillary sinus protruding through an enlarged maxillary ostium.
Case Discussion
The findings are compatible with antrochoanal polyp.
The antrochoanal polyp, a benign solitary polypoid lesion, usually arises in the maxillary sinus, opacifying and enlarging the sinus cavity, without bone destruction. It passes through the ostium of the sinus into the choana, and from there into the posterior nasopharynx. The soft tissue mass does not erode or destroy contiguous soft tissue or bony structures.