Definition: Stones in the URETER that are formed in the KIDNEY. They are rarely more than 5 mm in diameter for larger renal stones cannot enter ureters. They are often lodged at the ureteral narrowing and can cause excruciating renal colic.
chem composition of caclculi use /chem; /ultrastruct permitted
Other names Calculus, Ureteral; Calculi, Ureteral; Ureteral Calculus
