Multidisciplinary management of ulcerative colitis complicated by immune checkpoint inhibitor-associated colitis with life-threatening gastrointestinal hemorrhage: A case report

Figure 4 Colonoscopy examination. A: The mucosa of the terminal ileum is normal; B and C: Extensive and continuous hyperemia, edema, erosion, polypoid hyperplasia, irregular deep chisel and geoglyphic ulcers; D: The ulcers and erosion of the sigmoid colon were significantly improved.