Long-term follow-up of laparoendoscopic single site partial nephrectomy for non-functioning moieties of renal duplication and fusion anomalies in infants and children.

To report on long-term follow-up and outcomes of infants and small children who have undergone LaparoEndoscopic Single-Site (LESS) partial nephrectomy to manage upper urinary tract duplication and fusion anomalies.

A retrospective review was performed evaluating outcomes of pediatric patients who underwent LESS partial nephrectomy for upper urinary tract duplication and fusion anomalies from January 2012 to July 2015, by a single surgeon at a tertiary pediatric referral center. Demographic and perioperative data were reviewed as well as follow-up imaging. Descriptive statistics were used for analysis.

A total of 18 patients were identified. Additional access was used for 2 patients to complete the procedure. Median follow-up was 39 months. No short-term complications were encountered. Three patients were noted to have abnormal postoperative ultrasounds: 2 perinephric fluid collections and 1 atrophy of the remaining ipsilateral moiety. One fluid collection resolved completely, and the other decreased in size. Complete atrophy of the ipsilateral moiety occurred. No secondary procedures were required.

LESS partial nephrectomy is safe for renal duplication and fusion anomalies with good long-term outcomes. Although it can be safely performed, it is a technically demanding procedure and has been discontinued in favor of robotic partial nephrectomy.

Journal of endourology. 2019 Nov 23 [Epub ahead of print]

Laura Zaccaria, Eric Fichtenbaum, Eugene Minevich, Marion Schulte, Paul Hyungwook Noh

Cincinnati Children's Hospital Medical Center, 2518, Pediatric Urology, Cincinnati, Ohio, United States; ., Cincinnati Children's Hospital Medical Center, 2518, Division of Urology, 3333 Burnet Ave ML 5037, Cincinnati, Ohio, United States, 45229-3026; ., Cincinnati Children's Hospital Medical Center, Urology, 3333 Burnet Ave, Cincinnati, Ohio, United States, 45229; ., Cincinnati Children's Hospital Medical Center, 2518, Pediatric Urology, 3333 Burnet Avenue, Cincinnati, Ohio, United States, 45229; ., Cincinnati Children's Hospital Medical Center, Division of Pediatric Urology, 3333 Burnet Avenue, ML 5037, Cincinnati, Ohio, United States, 45229; .