We conclude that HD can be excluded with a single rectal suction biopsy 65% of the time. A second biopsy session will exclude the diagnosis in an additional 11% of patients. Both devices yield biopsies of comparable quality and are equally useful in excluding the diagnoses of HD.
In children with known or suspected CD, our MRE protocol has a high specificity and positive predictive value for terminal ileitis. Severity of inflammation on MRE had a statistically significant positive correlation with PCDAI.
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