title: Treatment outcomes of transurethral macroplastique injection for postprostatectomy incontinence.
abstract: OBJECTIVE
  We investigated the efficacy of transurethral injection of Macroplastique bulking agent (Uroplasty) for male stress urinary incontinence (SUI) after prostate surgery.
  
  
  METHODS
  This retrospective review included men with SUI treated by transurethral injection for symptoms resulting from prostate surgery. Patients were evaluated at 1 month and 6 months after injection by determining the number of pads used per day and changes in incontinence symptoms. Treatment success was defined as use of 1 pad or fewer per day combined with subjective symptom improvement.
  
  
  RESULTS
  The study population comprised 30 men with a mean age of 66.1±5.3 years. Of the 30 patients, 24 (80.0%) underwent prostate cancer surgery and the remaining 6 (20.0%) underwent surgery for benign prostatic hyperplasia. The preinjection pad number was 2.9±1.9 pads per day. After injection treatment, the mean follow-up period was 9.3±12.7 months and the success rate was 43% (13/30) at 1 month and 32% (6/19) at 6 months. Injection was more likely to result in a successful outcome in patients with no preinjection radiation treatment history and higher abdominal leak point pressure (ALPP) than in those with a previous history of radiation treatment and lower ALPP, although this result was not statistically significant. Acute urinary retention occurred in 5 patients (17%).
  
  
  CONCLUSIONS
  Transurethral Macroplastique injection treatment is a relatively non-invasive treatment method for male SUI with a success rate of 43% at 1 month and 32% at 6 months. Patients with a higher ALPP and no previous history of radiation therapy may experience better treatment outcomes.
authors.affiliation: Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Sin Woo
authors.initials: SW
authors.lastname: Lee
authors.affiliation: Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Jung Hun
authors.initials: JH
authors.lastname: Kang
authors.affiliation: Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Hyun Hwan
authors.initials: HH
authors.lastname: Sung
authors.affiliation: Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: U-Seok
authors.initials: US
authors.lastname: Jeong
authors.affiliation: Department of Urology, Samsung Changwon Hospital, Sungkyunkwan University School of Medicine,Changwon, Korea.
authors.forename: Young-Suk
authors.initials: YS
authors.lastname: Lee
authors.affiliation: Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Minki
authors.initials: M
authors.lastname: Baek
authors.affiliation: Department of Urology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea.
authors.forename: Kyu-Sung
authors.initials: KS
authors.lastname: Lee
keywords: Dimethylpolysiloxanes; Male; Prostate; Urethra; Urinary incontinence