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16:27 - 16:30
S11-6
(PP)
ELEVEN YEAR PIONEER EXPERIENCE ON LAPAROSCOPIC NEPHRECTOMY FOR
TREATMENT OF WILMS TUMOR: BRAZILIAN PIONEER EXPERIENCE IN A SINGLE
INSTITUTION.
Ricardo DUARTE
1
, Lilian CRISTOFANI
2
, Francisco DENES
1
, Vicente ODONE-FILHO
2
and Miguel SROUGI
1
1) University of Sao Paulo, Urology, Sao Paulo, BRAZIL - 2) University of Sao Paulo, Pediatric Oncology, Sao Paulo,
BRAZIL
PURPOSE
The aim of this study was to report a 11 year retrospective analysis of the results on the videolaparoscopic
nephrectomy for the treatment of Wilms tumor, regarding surgical results, immediate and long term complications and
survival.
MATERIAL AND METHODS
From December 2003 to December 2014 23 children with unilateral Wilms tumor were treated with preoperative
chemotherapy followed by videolaparoscopic nephrectomy. The analysis included complications, transfusion, ruptures,
margins, conversions, lymph nodes, and relapse. Kaplan-Meyer method was used for survival analysis.
RESULTS
23 children were submitted to videolaparoscopic nephrectomy. Mean surgical time was 170.71±26.07 minutes and there
were no conversions or ruptures. Mean specimen weight was 142.02±105.85 (range 80 – 515 g) . No transfusions were
required. Surgical margins were positive in 1/17 cases (5.9%). Ten children were stage I, six stage II, 3 stage III and
four stage IV. One patient had focal anaplasia. 2/23(8.6%) patients presented tumor relapse: 1 local (positive margins
and) and 1 in lungs. The 10-year-event-free-survival was 91.3% (0.95 CI: 0.704-0.984).
CONCLUSIONS
Videolaparoscopic nephrectomy after preoperative chemotherapy for the treatment of children with Wilms tumor is safe
and promotes the same long term survival results as open approach.