Fig. 3From: A Randomized Study of Minimally Invasive Percutaneous Nephrolithotomy (MPCNL) with the aid of a patented suctioning sheath in the treatment of renal calculus complicated by pyonephrosis by one surgeryLeft: Preoperative KUB for a patient with staghorn renal calculus complicated by pyonephrosis; Middle: Preoperative IVU for a patient with staghorn renal calculus complicated by pyonephrosis; Right: Post-MPCNL KUB for a patient with staghorn renal calculus complicated by pyonephrosis, with the aid of the patented suctioning sheathBack to article page