Fig. 3
From: Sweet’s syndrome and mucosal prolapse polyps in a male patient with ulcerative colitis
a, b Colonoscopic findings for the mucosal prolapse polyps showing scatter polypoid hyperplasia from the ascending colon to the sigmoid colon. c, d Histologic findings for the mucosal prolapse polyps showing crypt dilatation, branching, twisting with interstitial edema, local interstitial fibrosis, muscle fiber penetration growth, and localised neutrophils infiltrated into the epithelium to form cryptonitis (H&E stain)