Stromal cell atypia in sinonasal polyposis.
Cellular atypia in stromal cells of nasal polyps is a peculiar response in fibroblasts or fibrohistiocytes to increased intercellular fluid and/or vascular compromise. Adherence to established histologic criteria will eliminate misjudging these cytologic changes as sarcomas.
D003593:Cytoplasm / Q000648:ultrastructure; D006801:Humans; D009298:Nasal Polyps / Q000648:ultrastructure*