In human anatomy, the ureters are tubes made of smooth muscle fibers that propel urine from the kidneys to the urinary bladder. In the adult, the ureters are usually 25–30 cm (10–12 in) long and around 3–4 mm (0.12–0.16 in) in diameter. Historically, the ureter is lined by the urothelium, a type of transitional epithelium, and has an additional smooth muscle layer in the more distal one-third to assist with peristalsis.

Holmium Laser Lithotripsy of Ureteric Stones
Laser Ablation of Ureteric Tumors
Endoscopic Balloon Procedures
Laser Ablation of Ureteric Strictures