“…Acute renal failure (AKb) as a complication of PNH is uncommon and usually related to venous thrombosis [2,3]. ARF due to acute tubular necrosis (ATN) during hemolysis or hemoglobinuria in PNH has been rarely reported [3,4], We describe a patient with PNH who developed such a complication and fully recovered on conser vative treatment alone, without dialysis.…”