Copyright ©The Author(s) 2021.
World J Gastroenterol. Jun 14, 2021; 27(22): 2963-2978
Published online Jun 14, 2021. doi: 10.3748/wjg.v27.i22.2963
Figure 1
Figure 1 Common upper gastrointestinal endoscopic and microscopic presentations in ulcerative colitis. UGI: Upper gastrointestinal; UC: Ulcerative colitis.
Figure 2
Figure 2 Endoscopic and microscopic presentations of esophageal ulcers associated with ulcerative colitis. A: Endoscopic view showing multiple ulcerative lesions of the esophagus; B: Microscopic view showing squamous epithelial hyperplasia, interstitial fibrous tissue proliferation, inflammatory cell infiltration, and visible neutrophil aggregation.
Figure 3
Figure 3 Endoscopic and microscopic manifestations of gastritis-associated ulcerative colitis. A: Endoscopic image displaying multiple protrusion lesions of the gastric mucosa; B: Microscopic image showing mucosal inflammation with hyperplastic polypoid changes.
Figure 4
Figure 4 Pathogenesis of upper gastrointestinal mucosal lesions.
Figure 5
Figure 5 Endoscopic pictures of esophageal ulcer- and gastritis-associated ulcerative colitis after treatment. A: Endoscopic picture revealing a healing scar of multiple esophageal ulcers after administration of remicade (infliximab for injection); B: Endoscopic picture demonstrating multiple protrusion lesions of the gastric mucosa after treatment with remicade and methylprednisolone.