An easily overlooked iatrogenic cause of renal failure.

We report moderate renal failure in a 50-year-old man with a history of recent colonoscopy after oral sodium phosphate purgative use. We initially missed the correct diagnosis, but renal biopsy revealed signs of acute phosphate nephropathy. The patient had residual renal impairment at 8-month follow-up. Greater awareness of this complication is needed amongst health care professionals. The preventive strategies are discussed.