Retroperitoneal Laparoscopic Marsupialization of Simple Renal Cyst

Kim, Young Sig; Kim, Sun Il; Kim, Jang Hwan; Yang, Seung Cheol

Abstract

PURPOSE: The minimally invasive technique in urologic treatment such as percutaneous cyst aspiration with sclerotherapy is increasing in recent years to treat symptomatic simple renal cyst. However, this method has a high recurrence rate. The laparoscopic approach can be an alternative method which is far less invasive than open surgery and less recurrence rate than sclerotherapy. Furthermore, the retroperitoneal approach can avoid unnecessary intraperitoneal manipulation and thereby reduce complications such as injury and adhesion of the bowel. We evaluated the recurrence rate, hospital stay, and postoperative morbidity of retroperitoneal laparoscopic marsupialization of simple renal cyst.
MATERIALS AND METHODS
From July 1996 to May 1997, 27 patients(male 7, female 20) with simple renal cyst, presenting with pain(14 patients), recurrent cyst after percutaneous aspiration(9), and incidentally found renal cyst(4) was managed with retroperitoneal laparoscopic marsupialization of simple renal cyst. Mean patient age and cyst size were 50 years(range 35-66 years) and 7.8cm(range 3.0-12.0cm), respectively.
RESULTS
Mean operative time, hospital stay, and follow-up period were 58.9 minutes(range 40-110 minutes), 2.3 days(range 1-4 days) and 14.2 months(range 6-25 months), respectively. There was no recurrence and cytologic and pathologic examinations were benign in all patients. There was no significant difference in the operative time according to the position and the side of the renal cyst.
CONCLUSIONS
Retroperitoneal laparoscopic cyst marsupialization is an effective therapy for recurrent or symptomatic large simple renal cyst with low recurrence rate and postoperative morbidity.