How are gallstones formed in patients with Crohn disease?

Updated: Jul 26, 2019
  • Author: Leyla J Ghazi, MD; Chief Editor: Praveen K Roy, MD, AGAF  more...
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Gallstones are formed as a consequence of an increased cholesterol concentration in the bile, caused by a reduced bile salt pool. In patients with an ileostomy, increased fluid and electrolyte losses may lead to concentrated acidic urine and the formation of uric acid stones. External compression of the ureter by an inflammatory mass or abscess may lead to hydronephrosis. Enterovesical fistulae may present with recurrent urinary tract infections or pneumaturia.

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