Irritable bowel syndrome other diagnostic studies

Irritable bowel syndrome Microchapters
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief:

Overview

There are no other diagnostic studies associated with [disease name].

OR

[Diagnostic study] may be helpful in the diagnosis of [disease name]. Findings suggestive of/diagnostic of [disease name] include [finding 1], [finding 2], and [finding 3].

OR

Other diagnostic studies for [disease name] include [diagnostic study 1], which demonstrates [finding 1], [finding 2], and [finding 3], and [diagnostic study 2], which demonstrates [finding 1], [finding 2], and [finding 3].

Other Diagnostic Studies

• There are no other diagnostic studies associated with [disease name].

• [Diagnostic study] may be helpful in the diagnosis of [disease name]. Findings suggestive of/diagnostic of [disease name] include:
  • [Finding 1]
  • [Finding 2]
  • [Finding 3]

• In young patients with symptoms of classic IBS, endoscopy is not done.
• Gastrointestinal endoscopy is done in difficult cases of IBS where history is unclear but physical examination is suggestive of the diagnosis.
• All IBS patients with alarm features must undergo endoscopic evaluation.
• Colonoscopy must be considered in patients aged more than 50 years as part of routine colon cancer screening.
• In IBS patients with persistent diarrhea of age >40 years, a colonoscopy should also be performed to rule out organic causes like IBD and perform biopsies.
• IBS patients with dyspepsia, should undergo esophagogastroduodenoscopy.
• Sigmoidoscopy is performed in patients in order to exclude melanosis coli due to laxative abuse and microinflammation.
• Sigmoid colon biopsies and duodenal biopsies are required for exclusion of microscopic colitis, Crohn's disease and celiac disease.

Anorectal manometry

Anorectal manometry rules out obstructive defecation (pelvic-floor dyssynergia).