title: Ultrasound-guided percutaneous sclerotherapy of simple renal cysts with n-butyl cyanoacrylate and iodized oil mixture as an outpatient procedure.
abstract: OBJECTIVE
  The aim of this study was to evaluate the efficacy and safety of ultrasound guided percutaneous sclerotherapy of symptomatic simple renal cysts with n-butyl cyanoacrylate (NBCA) and iodized oil mixture as an outpatient single session procedure.
  
  
  METHODS
  A total of ninety two patients with 100 symptomatic simple renal cysts (larger than 5 cm) were treated by ultrasound (US)-guided percutaneous aspiration and injection of NBCA and iodized oil mixture. The patients (68 men and 24 women, mean age, 42.4 ± 10.5 years) were treated with as out-patients. The volume of the treated cysts was calculated with periodic noncontrast enhanced CT examinations 3, 6 and 9, months after the procedure. The procedure was considered successful at follow-up CT when there was total ablation or greater than 80% reduction of size with resolution of symptoms, respectively. Failure was defined as less than 80% reduction and/or persistent symptoms.
  
  
  RESULTS
  The sclerotherapy was technically successful in all patients. The diameter of the cysts ranged between 5.5 and 13.5 cm (mean, 8.8 ± 1.4 cm), and 1.5 and 3.8 cm (mean, 2.1 ± 0.4 cm) before and after sclerotherapy, respectively (P < 0.001). Average diameter reduction was 83.7% during the follow-up period. The mean follow- up lasted 7.1 months (3-11 months). Flank pain resolved in 86 of 92 symptomatic patients (93.48%). In six patients, the symptoms decreased slightly. The procedure was successful in 98 of 100 cysts (98%), demonstrated by follow-up CT. The only two failed cyst was larger than 10 cm in diameter and don't required any further treatment. We did not observe any procedure related complications.
  
  
  CONCLUSIONS
  Ultrasound guided percutaneous sclerotherapy with NBCA and iodized oil mixture for management of symptomatic simple renal cysts was found to be a real time, effective, safe, well tolerated, alternative and simple technique that can be carried out by urologists as an outpatient procedure.
authors.affiliation: Department of Urology, Al-Azhar Faculty of Medicine, Cairo, Egypt.
authors.forename: Tamer A
authors.initials: TA
authors.lastname: Ali
authors.affiliation: Department of Urology, Al-Azhar Faculty of Medicine, Cairo, Egypt.
authors.forename: Mohamed A
authors.initials: MA
authors.lastname: Abdelaal
authors.affiliation: Department of Radiology, Al-Azhar Faculty of Medicine, Cairo, Egypt.
authors.forename: Ashraf
authors.initials: A
authors.lastname: Enite
authors.affiliation: Department of Urology, Al-Azhar Faculty of Medicine, Cairo, Egypt.
authors.forename: Yasser A
authors.initials: YA
authors.lastname: Badran
keywords: N-butyl cyanoacrylate; renal cyst; sclerotherapy
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