Application of anterograde flexible ureteroscope combined with retrograde ureteroscope in the treatment of lower ureteral calculi with ureteral atresia in lateral lithotomy / 现代泌尿外科杂志

【Objective】 To investigate the safety and efficacy of flexible ureteroscope (FU) combined with retrograde ureteroscope (URS) in the treatment of lower ureteral calculi with ureteral atresia. 【Methods】 Clinical data of 7 patients treated during Jan.2018 and Jun.2021 were retrospectively analyzed. 【Results】 Ureteral calculi and ureteral atresia were successfully treated, without serious complications. Six to eight weeks after operation, CT examination showed that hydronephrosis was relieved to varying degrees and the ureteral stents were in good position, without residual stones. Six months after operation, there was no significant exacerbation of hydronephrosis and the renal function remained stable. 【Conclusion】 Anterograde FU combined with retrograde URS has high stone-clearance rate, small trauma and high safety in the treatment of ureteral stricture and ureteral calculi.

Extrarenal calyces: A rare anomaly of the renal collecting system.

The abnormalities of the renal collecting system represent a complex and often confusing subset of urological anomalies. They manifest in many ways and often make preoperative diagnosis difficult. Extrarenal calyces (wherein the calyces and renal pelvis lie outside the renal parenchyma) is one of the rare anomaly of the collecting system. This anomaly may be associated with other anomalies of the urogenital system. We describe in this case report an unusual case of extrarenal calyces with five long calyces draining a hydronephrotic kidney with associated ureteral atresia. Radiological investigations failed to clearly define these abnormalities. The present case helps in understanding the characteristics of a rare, complex anomaly of the urinary system.