Severe peri-renal sepsis in established renal failure masquerading as an acute abdominal catastrophe.

Severe worsening lactic acidosis in an elderly patient following an episode of atrial fibrillation, who is not haemodynamically compromised, usually indicates an intra-abdominal vascular catastrophe. We describe a unique case of severe peri-renal sepsis in a patient with long-standing dialysis-dependent chronic kidney disease unrelated to urolithiasis that masqueraded as an acute abdominal condition requiring emergency laparotomy and nephrectomy.