Histopathology of Chronic Rhinosinusitis and Sinonasal Inflammatory Polyps.

Sinus content specimens from patients with chronic rhinosinusitis (CRS) are commonly encountered by surgical pathologists across various practice settings. The inflammatory cellular component of CRS often includes eosinophil-rich inflammation, and the specimens frequently contain polyps. Moreover, noninvasive forms of fungal rhinosinusitis can also be identified in the sinus contents of patients with CRS. This article provides a succinct review of the histopathology of CRS and sinonasal inflammatory polyps.