What is the accuracy of a colonoscopy with ileoscopy in the assessment of Crohn disease (CD)?

Updated: Oct 17, 2017
  • Author: William A Rowe, MD; Chief Editor: BS Anand, MD  more...
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Answer

Colonoscopy with ileoscopy in the assessment of Crohn disease has a sensitivity of 74% and a specificity of 100%, leading to a positive predictive value of 100% as a diagnostic test. [67] When paired with small bowel follow-through, the sensitivity of this pair of diagnostic tests is increased to 78%, with a continued positive predictive value of 100%. [67]


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