The wandering staghorn calculus betraying the hydronephrotic nature of a renal mass.
D000368:Aged; D006801:Humans; D006869:Hydronephrosis / Q000000981:diagnostic imaging*; D007669:Kidney Calculi / Q000000981:diagnostic imaging*; D007674:Kidney Diseases / Q000000981:diagnostic imaging; D007682:Kidney Pelvis / Q000000981:diagnostic imaging; D008297:Male; D011859:Radiography; D014514:Ureteral Calculi / Q000000981:diagnostic imaging