title: Knot formation at the mid portion of an indwelling ureteral stent.
mesh_terms: D000368:Aged; D003558:Cystoscopy; D020878:Device Removal; D005260:Female; D006801:Humans; D007669:Kidney Calculi / Q000628:therapy*; D007682:Kidney Pelvis; D008096:Lithotripsy; D011475:Prosthesis Failure; D011704:Pyelonephritis / Q000628:therapy*; D015607:Stents; D014514:Ureteral Calculi / Q000628:therapy*; D014517:Ureteral Obstruction / Q000628:therapy*