title: Renal artery pseudoaneurysm following laparoscopic partial nephrectomy.
abstract: OBJECTIVE
  To present our experience with the management of renal artery pseudoaneurysms following laparoscopic partial nephrectomy (LPN).
  
  
  METHODS
  Our bi-institutional LPN database of 259 patients from July 2001 to April 2008 was queried for patients diagnosed with a postoperative renal artery pseudoaneurysm. Demographic data, perioperative course, complications, and follow-up studies in identified subjects were analyzed. Postembolization success was defined as symptomatic relief, resolution of hematuria, and a stable hematocrit and serum creatinine.
  
  
  RESULTS
  We identified 6 patients (2.3%) who were diagnosed with a renal artery pseudoaneurysm after LPN. The mean age of our cohort was 61.2 years (49-76), mean operative time was 208 minutes (140-265), and mean estimated blood loss was 408 mL (50-800). Patients presented at a mean of 12.6 days (5-23) after the initial surgery. Five patients had gross hematuria and a decreased hematocrit, with 1 patient presenting with clinical symptoms of hypovolemia. The sixth patient was incidentally diagnosed. The diagnosis of a renal artery pseudoaneurysm was confirmed in all cases by angiography. Selective angioembolization was successfully performed in all patients. At a median follow-up of 8.3 months all patients (100%) remained without any evidence of recurrence.
  
  
  CONCLUSIONS
  Although pseudoaneuryms are a rare postoperative complication of LPN, they are potentially life-threatening. Early identification and proper management can help reduce the potential morbidity associated with pseudoaneurysms. Our experience demonstrates the feasibility and supports the use of selective angioembolization as an excellent first-line option for patients who present with this form of delayed bleeding.
authors: Department of Urology, Montefiore Medical Center, Bainbridge, Bronx, New York, USA.
authors: Edan Y
authors: EY
authors: Shapiro
authors: A Ari
authors: AA
authors: Hakimi
authors: Elias S
authors: ES
authors: Hyams
authors: Jacob
authors: J
authors: Cynamon
authors: Michael
authors: M
authors: Stifelman
authors: Reza
authors: R
authors: Ghavamian
mesh_terms: D000368:Aged; D017541:Aneurysm, False / Q000175:diagnosis / Q000209:etiology* / Q000628:therapy; D005260:Female; D006801:Humans; D010535:Laparoscopy / Q000009:adverse effects*; D008297:Male; D008875:Middle Aged; D009392:Nephrectomy / Q000009:adverse effects* / Q000379:methods*; D012077:Renal Artery