Robotic or Laparoscopic Pyeloplasty
The Key Things to Know:
A robotic or laparoscopic pyeloplasty is a minimally invasive procedure used to repair a narrowing or blockage where the kidney joins the ureter (the uretero-pelvic junction, or UPJ). This operation restores normal urine drainage and protects kidney function. Success rates are high, typically over 90%.
What It Is
Under general anaesthetic, several small incisions (5–10 mm) are made in the abdomen. Using a laparoscope or robotic instruments, the surgeon removes the narrowed segment and re-joins the healthy ends of the ureter and kidney (a procedure called anastomosis). A temporary stent is placed to support healing and is removed a few weeks later.
When It's Needed
Pyeloplasty is recommended when:
UPJ obstruction causes pain, infection, or hydronephrosis (swelling of the kidney)
Imaging shows reduced drainage or function of the affected kidney
Stones or crossing vessels contribute to obstruction
Surgery Diagram
Benefits
Minimally invasive – small incisions, less pain
Excellent long-term success (>90%)
Short hospital stay (1–2 days)
Preservation of kidney function
Risks
Urine leak at the repair site (≈2–5%)
Infection or fever (≈5%)
Bleeding requiring transfusion (≈2%)
Stricture recurrence requiring re-intervention (≈5–10%)
Rare injury to nearby organs (<1%)
What to Expect After Surgery
You’ll stay in the hospital for 1–2 days. A urinary catheter and small drain may be placed for 24–48 hours. The internal stent is typically removed 4–6 weeks later via a short cystoscopy. Most patients return to normal activity within 2–3 weeks and full recovery by 4–6 weeks.
FAQs
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More than 90% of patients have long-term relief of obstruction and pain.
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Yes – a temporary stent is left in the ureter to support healing and is removed later in clinic.
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Both robotic and laparoscopic pyeloplasty are effective; robotic surgery offers greater precision and dexterity, especially in complex cases.
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