PT - JOURNAL ARTICLE AU - Barbara Clark AU - Mohammad Wisam Baqdunes AU - Gregory M Kunkel TI - Diet-induced oxalate nephropathy AID - 10.1136/bcr-2019-231284 DP - 2019 Sep 01 TA - BMJ Case Reports PG - e231284 VI - 12 IP - 9 4099 - http://casereports.bmj.com/content/12/9/e231284.short 4100 - http://casereports.bmj.com/content/12/9/e231284.full SO - BMJ Case Reports2019 Sep 01; 12 AB - Oxalate nephropathy is a rare condition and may be overlooked due to lack of recognition and understanding of triggers. An 81-year-old man was sent to nephrologist because of significantly increased creatinine (1.5–1.9 mg/dL) noted for 3 months. He had well-controlled diabetes but no history of kidney disease. He had no chronic diarrhoea or intestinal surgery. He was a health-minded individual who had read extensively about benefit of antioxidants. Initial work-up was unrevealing. Within a few weeks after first visit, he developed acute symptomatic worsening kidney injury with nausea, vomiting and creatinine up to 6.8 mg/dL. Repeat examination of the urine sediment revealed casts containing calcium oxalate crystals. A deeper dietary history revealed widespread oxalate precursor consumption. A kidney biopsy confirmed oxalate nephropathy. Restriction of oxalate consumption combined with adequate hydration, oral calcium acetate resulted in partial renal recovery without need for haemodialysis.