Fibroepithelial sinonasal polyp


The patient had the left nasal polyp/lesion biopsied.


MICROSCOPIC DESCRIPTION: Sections show non keratinizing stratified squamous mucosa with underlying stroma. There is mild spongiosis, scattered intraepithelial neutrophils and reactive atypia. The stroma contains a mixed acute and chronic inflammatory cell infiltrate. There is no evidence of dysplasia or malignancy. A PAS stain is negative for fungal micro-organisms.

FINAL DIAGNOSIS: Fibroepithelial polyp with acute inflammation.