Sinus CT scan of a patient with eosinophilic mucin rhinosinusitis (EMRS)

Sinus CT scan of a patient with EMRS showing characteristic features of soft tissue thickening in the upper nasal cavity consistent with nasal polyposis and extensive bilateral sinus opacification and hyperdensities. Panel A demonstrates a bone window, which provides excellent delineation of bony structures but only faintly demonstrates hyperdensities in the maxillary sinuses. In contrast, panel B (same image as on the left) is a soft tissue window that demonstrates dramatic hyperdensities in both maxillary sinuses. This patient underwent sinus surgery. The sinus pathology showed polypoid chronic rhinosinusitis with stromal eosinophils and abundant allergic mucin. A Gomori-methenamine silver (GMS) stain was negative for fungal organisms.