intestinal (enteric) hyperoxaluria
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Etiology
- bowel surgery (resection of small intestine)
- Crohn's disease
- ileostomy
- Roux-en-Y gastric bypass surgery
Pathology
- undigested fatty acids bind calcium freeing intestinal oxalate for absorption
Laboratory
- 24 hour urine oxalate > 50 mg
Management
- cholestyramine 4 g with meals
- oral calcium loading (calcium carbonate or calcium citrate supplements)
- adequate hydration
More general terms
Additional terms
References
- ↑ Harrison's Principles of Internal Medicine, 13th ed. Isselbacher et al (eds), McGraw-Hill Inc. NY, 1994, pg 1330
- ↑ Medical Knowledge Self Assessment Program (MKSAP) 16, 17 American College of Physicians, Philadelphia 2012, 2015
- ↑ Kumar R, Lieske JC, Collazo-Clavell ML et al Fat malabsorption and increased intestinal oxalate absorption are common after Roux-en-Y gastric bypass surgery. Surgery. 2011 May;149(5):654-61. PMID: https://www.ncbi.nlm.nih.gov/pubmed/21295813