Encrusted ureteric stent

Last revised by Yahya Baba on 24 Jul 2021

Ureteric stent encrustation is a significant complication of ureteric stent placement, it can prone patient to renal damage. The timely endourologic intervention has a significant role in the rescue of renal function 1,3.

Causes of encrustation are multifactorial which include:

  • calcium or magnesium precipitation along stent pathway secondary to urinary tract infection
  • chronic stone-forming patients
  • pregnancy and recurrent urinary tract infections 2

Stents are indicated for both short and long term duration: 

  • stent blockage
  • dislodgement of stent
  • Urinary tract infection/urosepsis

Percutaneous nephrolithotomy, antegrade ureteroscopic calculus manipulation and extracorporeal shock wave lithotripsy are treatment options. An average of 2.5 endo-urological surgeries are required 3. Three monthly exchange of double J ureteral stents is also well established to prevent encrustation 2,3,5.

  • lost ureteral stents produce significant morbidity and mortality, secondary to widespread encrustation and fragmentation
  • avoided ureteral stents are identified in urologic practice because of ignorance of patient or failure of the physician to satisfactorily advise the patient 5

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