title: A better way to manage perinephric abscesses: percutaneous ultrasonography-guided endoscopic lavage.
abstract: OBJECTIVE
  To report the efficacy and safety of percutaneous ultrasonography-guided endoscopic lavage in the management of perinephric abscesses.
  
  
  METHODS
  This is a retrospective review of patients in a single center who had perinephric abscesses and were treated by percutaneous ultrasonography-guided endoscopic lavage during the period of March 2001 to March 2013. Information including the demographics, comorbid medical conditions, presenting symptoms, size of abscesses, operation information, and postoperative information were retrieved for review.
  
  
  RESULTS
  There were 37 patients (40 operations) identified during the study period. The mean age was 56.8 years (21-91 years). Eighteen (48.9%) patients presented with loin pain (48.6%) and/or fever (18, 48.6%), and the mean diameter of the abscesses was 10.8 cm (5-22 cm). Thirty-one (77.5%) procedures were performed under general anesthesia. The mean operative time was 49.4 minutes (15-140 min). Thirty-one (77.5%) patients had their percutaneous track dilated to 32F. Only two of 37 (5.4%) patients needed repeated drainage. The average postoperative drainage time was 8.35 days (3-21 days). The median postoperative hospital stay for our patients was 10 days (4-101 days). There was no mortality related to the abscess in this cohort.
  
  
  CONCLUSIONS
  Percutaneous Ultrasonography-guided endoscopic lavage was shown to be an effective and safe approach for patients with perinephric abscesses.
authors.affiliation: 1 Division of Urology, Department of Surgery, The Chinese University of Hong Kong , Hong Kong, China .
authors.forename: Chi-Fai
authors.initials: CF
authors.lastname: Ng
authors.forename: Yee Vonne
authors.initials: YV
authors.lastname: Liong
authors.forename: Wai Shing
authors.initials: WS
authors.lastname: Leong
authors.forename: David F
authors.initials: DF
authors.lastname: Harris
authors.forename: Ban Eng
authors.initials: BE
authors.lastname: Lau
authors.forename: Men Long
authors.initials: ML
authors.lastname: Liong
mesh_terms: D000038:Abscess / Q000000981:diagnostic imaging / Q000628:therapy*; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D000900:Anti-Bacterial Agents / Q000627:therapeutic use; D004322:Drainage / Q000379:methods; D019160:Endosonography / Q000295:instrumentation; D005260:Female; D006801:Humans; D007674:Kidney Diseases / Q000000981:diagnostic imaging / Q000628:therapy*; D007902:Length of Stay; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D007507:Therapeutic Irrigation / Q000379:methods; D014057:Tomography, X-Ray Computed / Q000295:instrumentation; D018084:Ultrasonography, Interventional / Q000379:methods*; D055815:Young Adult
chemical_list: D000900:Anti-Bacterial Agents