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Related Experiment Video

Updated: Feb 4, 2026

Laparoscopic Left Hemihepatectomy Combined with Caudate Lobe Resection
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Laparoscopic heminephrectomy for duplex system: observed difference in outcomes between upper and lower pole

Charlotte K Roberts1, Jonathan S Ellison, Omar Aboumarzouk

  • 1The Bristol Urological Institute, Bristol, United Kingdom.

The Canadian Journal of Urology
|October 4, 2018
PubMed
Summary

Minimally invasive heminephrectomy for symptomatic duplex kidney in adults is safe, but lower pole resections have higher complication rates. Alternative treatments like uretero-ureterostomy may be considered for lower pole moieties.

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Area of Science:

  • Urology
  • Congenital Abnormalities
  • Minimally Invasive Surgery

Background:

  • Renal duplication is a common congenital anomaly.
  • Symptomatic duplex kidney is rare in adults.
  • Heminephrectomy is a traditional treatment for poorly functioning moieties.

Purpose of the Study:

  • To evaluate outcomes of minimally invasive heminephrectomy for symptomatic duplex kidney in adults.
  • To compare complication rates between upper and lower pole resections.

Main Methods:

  • Retrospective review of 13 adult patients undergoing laparoscopic heminephrectomy for symptomatic duplex kidney (2011-2017).
  • Analysis of case notes and imaging data.
  • Categorization into upper pole (8 patients) and lower pole (5 patients) resections.

Main Results:

  • Median length of stay was 2 days.
  • Upper pole heminephrectomy had one postoperative infection.
  • Lower pole heminephrectomy had a 60% major complication rate, including conversion to nephrectomy, urinary leakage, and need for reoperation.
  • 40% of lower pole patients experienced late symptom recurrence.

Conclusions:

  • Minimally invasive heminephrectomy is safe and effective for symptomatic duplex kidney in adults when performed by experienced surgeons.
  • Lower pole heminephrectomy is associated with significantly higher complication rates.
  • Consideration of alternative surgical approaches, such as uretero-ureterostomy, is recommended for lower pole moiety management.