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Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
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In clinical practice to label remission in the case of ulcerative colitis, all the features are needed, EXCEPT:
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The correct answer is  In clinical practice, 'remission' mean a stool frequency <=3/day with no bleeding and no urgency. Sigmoidoscopy to confirm mucosal healing is generally unnecessary. Ref: Journal of Crohn's and Colitis (2012) 6, 965-990