In early mild Crohn's disease, the colonic mucosa appears endoscopically normal or small, punched-out aphthous ulcers are often seen (Figure 1). These aphthous ulcers are a result of submucosal ...
normal colonoscopy findings and characteristic histopathological findings in biopsy samples of the colonic mucosa. 1 Lymphocytic colitis and collagenous colitis are clinically indistinguishable ...
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