Oxalate Nephrolithiasis After Laparoscopic Roux-en-Y Gastric Bypass: A Growing Complication Following Bariatric Surgery

Abstract

Abstract

Historically, the development of enteric hyperoxaluria has been well recognized as a potential risk following the bariatric procedures jejunoileal bypass (JIB) and distal bypass. However, the occurrence of enteric hyperoxaluria has not been recognized as an associated, prevalent risk after Roux-en-Y gastric bypass (RYGBP). An increased rate of nephrolithiasis was observed in the Roux-en-Y patient population at the Columbia University Center for Metabolic & Weight Loss Surgery. A representative case of recurrent bilateral oxalate stone formation in a patient following RYGBP at the center is reported. Enteric hyperoxaluria and nephrolithiasis must be considered potential risks associated with any malabsorptive surgery, including RYGBP. Prevention of the development of hyperoxaluria is multifactorial and includes recognition of potential preoperative risk factors, postoperative follow-up evaluations, and attentive nutritional guidance. These patient management areas represent opportunities that need to be recognized and addressed in the prevention of hyperoxaluria in patients undergoing RYGBP.