Hyponatremia, hyperkalemia and hypercalcemia after ileal conduit diversion

In all types of urinary diversion interchange of electrolytes between blood and the urine in the lumen of the conduit may occur, resulting in electrolyte abnormalities. We describe a 67-year-old woman who developed hyponatremia, hyperkalemia and hypercalcemia following ureteroileocutaneostomy. The hyperkalemia and hypercalcemia were successfully treated with sodium polystyrene sulfonate.