From: The resonance® metallic ureteric stent in the treatment of chronic ureteric obstruction: a safety and efficacy analysis from a contemporary clinical series
Underlying cause of extrinsic ureteric compression
Associated Number of SIE
Retroperitoneal fibrosis
24
Neuropathic bladder
4
PUJ stricture
3
Duplex kidney
2
Obstructed transplant kidney
Malignancy (direct or nodal compression on ureter)
17