Kondo Naoya, Yoshino Yasumasa, Shiono Yutaka, Hasegawa Yuichi
The Department of Urology, Machida Municipal Hospital.
Hinyokika Kiyo. 2005 Jun;51(6):385-7.
A 37-year old man underwent extracorporeal shock wave lithotripsy for left renal stones after placing a ureteral stent (6 Fr multilength stent). Three months later the stent could not be extracted because of knot formation at the upper end. We performed ureterotomy and removed the stent.