Objectives: Renal cysts of the sinuses or parapelvic cysts constitute a rare form of renal cyst, usually associated with low back pain. Symptomatic forms may be treated by percutaneous aspiration, but the treatment of these cysts has changed considerably over recent years due to the proximity of the renal hilum. Percutaneous treatment is now contraindicated due to its high complication rate, and open surgery is an invasive technique. Laparoscopy appears to be the most appropriate and most effective solution.
Patients And Methods: The authors report five cases of parapelvic renal cysts all presenting with renal colic and diagnosed by ultrasound, and confirmed by CT in three cases. Treatment consisted of retroperitoneal laparoscopy using four trocars allowing cyst resection with no intraoperative complications or conversion.
Results: The mean operating time was 55 minutes (range: 40 to 70 minutes). The postoperative course was uneventful and all patients were discharged on postoperative D1 or D2. No recurrence was observed after a mean follow-up of 6 months (range: 3 to 15 months).
Conclusion: Retroperitoneal laparoscopic treatment of parapelvic renal cysts is an effective approach, with a low morbidity and less postoperative pain, a short convalescence period and good cosmetic results.
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