Outcome and renal function following salvage surgery for bilateral Wilms tumor: a single-institution experience

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ObjectiveThe aim of this study was to determine the surgical outcomes and renal function following salvage surgery for bilateral Wilms tumor (BWT).Summary background dataThe challenge for the surgeon treating BWT lies in striking a fine balance between renal preservation and oncological clearance.MethodsThis is a retrospective review of medical records in a tertiary care hospital in India. Nine children with BWT who presented between 2005 and 2015 were reviewed and followed up through telephone. Survival rates were calculated using the Kaplan–Meier method. A P value of less than 0.05 was considered statistically significant.ResultsSeven (78%) of nine children were boys and two (22%) were syndromic. Six (67%) children presented at less than 1 year of age. Eight (89%) children presented with an abdominal mass. There were no metastases at presentation. All children underwent trucut biopsy and neoadjuvant chemotherapy. Six children underwent surgery: four underwent bilateral nephron sparing surgery (NSS) and two underwent unilateral nephrectomy with contralateral NSS. Tumor recurred in two children. The mean follow-up was 38 months (range: 5–108 months). Creatinine clearance (CrCl) improved postoperatively in all children. Postoperative hypertension was transient and resolved with improvement in CrCl.ConclusionChildren with BWT in the Indian subcontinent may be younger than those in the rest of the world. NSS yields good outcomes even for recurrences. Postoperative hypertension is transient in the majority of patients and correlated with improvement in CrCl. Prognosis is related to operability and syndromic association.

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