Table 2: Causes of ureteral dilatation on CT Urography ().

NumberRight ureterLeft ureter

Case Ureteral calculusNormal ureter
Case Extrinsic vascular impression (internal iliac artery); ureteritisNormal ureter
Case Not assessedExtrinsic vascular impression (common iliac artery); ureteritis
Case Extrinsic vascular impression (common iliac artery)Normal ureter
Case Extrinsic vascular impression (bifurcation of common iliac artery)Normal ureter
Case Ureteral stricture at external iliac artery origin levelNormal ureter
Case Ureteral stricture at lumbosacral junction levelNormal ureter
Case Extrinsic vascular impression (common iliac artery)Ureteritis
Case Extrinsic vascular impression (common iliac artery)Normal ureter

Case : right ureter was not assessed on CT Urography as it was not visible on Intravenous Urography and hence not dilated.