<unk> s consist of spindle cells that are concentrically arranged around blood vessels and have inflammation, especially eosinophils. They may have leiomyoma/schwannoma-like areas with nuclear palisading. They typically stain with CD34 and vimentin, and, generally, do not stain with CD117 and S100. The endoscopic differential diagnosis includes other benign, pre-malignant and malignant gastrointestinal polyps. Image:Inflammatory_fibroid_polyp_-_high_mag. High mag. Morphological differential diagnosis<unk>  myofibroblastic tumour (IMT)
Inflammatory fibroid polyp
Hyperplastic polyp
Juvenile polyp
Intraepithelial neoplasia
Sessile serrated lesion
Traditional serrated adenoma
Carcinoma in situ
Segmental colitis associated with diverticulosis