The findings of ureterolithiasis in intravenous urography

Objective:To evaluate the findings of intravenous urography (IVU) in ureter stones.Methods:Clinical and IVU findings of 65 patients with ureter stone less than 10 mm in diameter were analyzed retrospectively.Results:The diagnosis of all of the cases were verified by surgery or through ureterolithotriptoscopy.The size of stones was 5.1～10mm in 34 cases, and ≤5mm in 31 case. The incarcerating site of ureter stone was usually the physiologic constriction. The form of stones was mostly oval shaped. There was mild dilatation of the ureter proximal to the stone (n=59) and concomitant hydrocalyx and hydronephrosis were seen in 39 cases.Conclusion:The use of IVU provides a good method for well demonstration of urinary system and easy identification and location of the ureter stone.Combined with plain radiography,IVU plays a leading role in the evaluation of urinary calculi.