(A) Severe ulcerative colitis with ulceration and spontaneous bleeding (the Mayo Endoscopy Score =3); (B) Colitis-associated high-grade dysplasia in a flat rectal lesion (green arrows); (C) Normal ...
For example, if a patient has ulcerative colitis or Crohn's disease that is not well controlled with medication, or if a colonoscopy shows precancerous lesions, a doctor may recommend a total or ...
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