Experiences of extracorporeal shock wave lithotripsy for calculus in primary megaureter

doi:10.3877/cma.j.issn.1674-3253.2020.03.017

Abstract

Abstract:

Objective

To investigate the feasibility of extracorporeal shock wave lithotripsy (ESWL) for calculus in primary megaureter, and to provide references for clinical treatment.

Methods

The calculus in primary megaureter was treated by ESWL from January 2013 to June 2018 in our hospital. The curative effect was observed and the experiences were summarized. There were 14 megaureteral units in 12 patients. There were 4 cases with right megaureter, 6 cases with left megaureter and 2 cases with both sides. 5 cases was dilatatied completely and 7 cases was dilatated at middle and lower ureter. The inner diameter of the megaureter was 1.5-2.5 cm, with the mean of (1.9±0.4) cm. There were 11 cases with ureteral calculus and 1 case with renal calculus. The length of calculus was 0.6-1.9 cm with the mean of (1.2±0.4) cm.

Results

1 case gave up ESWL after one time lithotripsy and chose ureteroscopic lithotripsy. 11 cases excreted the stones successfully after 1 to 5-time lithotripsy, with the mean of (2.4±1.6) times. The clearance rate was 91.67%, and the one-time success rate was 33.33%. The incidence of complications was 25%, including gross hematuria, pain and vomiting, without serious complications.

Conclusion

Calculus in primary megaureter could be treated by ESWL, but the one-time success rate is low.

Key words: Primary megaureter, Ureteral calculus, Kidney stones, ESWL, Surgical position

Haichun Yuan, Yuquan Xue, Yang Jiao, Huibin Hou, Zhen Wang. Experiences of extracorporeal shock wave lithotripsy for calculus in primary megaureter[J]. Chinese Journal of Endourology(Electronic Edition), 2020, 14(03): 228-231.

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