Table 1.

Summary of cases

	Case 1	Case 2	Case 3	Case 4
Age/Sex	31/F	62/M	41/M	48/F
Prior indication for insertion of stent	Promote ureteral healing post ureterolithotomy	Relief of ureteral edema	Bypass of ureteral obstruction sec to ureterolithiasis	Bypass extrinsic ureteral compression
Biomaterial stent composition	Tecoflex Polyurethane	Tecoflex Polyurethane	Tecoflex Polyurethane	Tecoflex Polyurethane
Ureteral stent calibre and length	Fr 6 × 26 cm #2	Fr 6 × 24 cm	Fr 6 × 24 cm	Fr 7 × 24 cm # 2
Indwelling period of time	5 months	6 months	11 months	5 months
Presenting symptoms	Stenturia, gross hematuria, flank pain, dysuria	Dysuria, flank pain	Hematuria, flank pain	Stenturia,* gross hematuria, dysuria, low back pain
Physical exam findings	Low grade fever, right CVA tenderness	Left CVA tenderness	Mild right CVA tenderness	Bilateral CVA tenderness
Remarkable laboratories	UTI on urinalysis, Enterococcus sp on urine Culture	UTI on urinalysis, E. Coli on urine CS	UTI on urinalysis, E. Coli on urine CS	E. Coli on Urine CS
Mode of stent retrieval	Ureteroscopy, foreign body grasper	Ureteroscopy,foreign body grasper	Ureteroscopy, foreign body grasper	Ureteroscopy, foreign body grasper and endonephroscopy percutaneous
Stent findings	Moderately encrusted, breakage line along stent side hole at proximal renal end, right, weak point line on the left distal bladder end side hole	Moderately encrusted, breakage line along stent side hole at proximal renal end	Severely encrusted, breakage line along stent side hole at distal bladder end	Slightly encrusted with breakage lines along stent side holes, right renal proximal end and left distal bladder end

M: male; F: female; CVA: costovertebral angle; UTI: urinary tract infection; CS: culture & sensitivity. Stenturia: excretion of stent fragments in the urine.