PMC6360617_01
Coronal CT scan, soft tissue window, showing complete opacification of the right maxillary sinus, obstruction of the right ostiomeatal complex, and soft tissue density in the right inferior meatus.
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fig1
Computed tomography showed complete opacification of the right maxillary sinus, obstruction of the right ostiomeatal complex, and soft tissue density in the right nasal passage (Figure 1).
Right nasal lesion. Hematoxylin and eosin stain. Much of this polypoid tumor had areas lined by mucin-containing cells (100x).
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There was invagination of the surface epithelium into the underlying stroma resulting in nested aggregates of bland glandular and mucinous cells and focally benign squamous epithelium (Figure 2).
Right inferior meatus mass. Hematoxylin and eosin stain. Gland-like structure lined by one or more layers of cells, with mucinous, vacuolated cells predominating towards the lumen. The nuclei are bland (630x).
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The polypoid lesion had an inverted growth pattern concerning for inverted papilloma, but it had a prominent glandular lining (Figure 3), leading to a revised diagnosis of REAH.