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Parapelvic cyst: A rare cause of ureteropelvic junction obstruction in a pediatric patient managed with robotic cyst decortication

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JOURNAL OF PEDIATRIC UROLOGY
卷 17, 期 6, 页码 864-865

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ELSEVIER SCI LTD
DOI: 10.1016/j.jpurol.2021.08.012

关键词

Robotic surgery; Ureteropelvic junction obstruction; Hydronephrosis; Parapelvic cyst

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A case of a right parapelvic renal cyst causing intermittent UPJO was successfully treated with robotic cyst decortication, highlighting the importance of clinical suspicion and appropriate imaging for diagnosis. The patient experienced resolution of hydronephrosis and parapelvic cyst after surgery, demonstrating the effectiveness of this approach.
Introduction We report a case of a right parapelvic renal cyst causing intermittent ureteropelvic junction obstruction (UPJO). Diagnostic evaluation A 13-year-old male was referred for right flank pain. Stone protocol CT revealed renal pelvis dilation with punctate stones. Due to concern for intermittently obstructive calculi, he underwent ureteroscopy, which was unremarkable. A diuretic renogram showed symmetric uptake with partial emptying on the right with pain after diuretic administration. In office, we potentiated a Dietl's crisis with ultrasound obtained before and after fluid intake. Comparison of ultrasounds revealed a parapelvic cyst causing calyceal dilation. He was counseled for robotic cyst decortication and possible pyeloplasty. Surgical considerations A robotic cyst decortication was performed. Once decorticated, the cyst base was fulgurated and pararenal fat was interposed into the cyst base. Console time was 70 min with minimal blood loss. The patient was discharged post-operative day 1. Follow-up renal ultrasound at 4 months demonstrated resolution of hydronephrosis and parapelvic cyst. Conclusion Parapelvic renal cysts causing intermittent UPJO is a rare entity that may be missed on a diuretic renogram. Clinical suspicion and appropriate imaging with ultrasound or magnetic resonance imaging are useful. Robotic cyst decortication is a technically feasible approach to treat this condition.

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