PMC6317837_01
Flexible sigmoidoscopy revealing erythematous mucosa in the sigmoid colon and no evident ulcers. The sigmoid mucosal view is limited by poor preparation prior to the procedure.
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F1
Flexible sigmoidoscopy performed after appropriate fluid resuscitation showed erythematous mucosa in the sigmoid colon and no ulcers (Figure 1).
Immunohistochemical stain demonstrating positive cytomegalovirus immunoreactivity (arrows).
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F2
Immunohistochemical stain for CMV returned positive (Figure 2).