"Kinked" Ureter: Case# 19794 This patient presented 8 months pregnant with complaint of RT flank pain. The first image demonstrated no UVJ obstruction at the bladder, and at this point a pregnancy induced hydronephrosis was fully expected. However, upon closer examination of the RT maternal hydronephrosis a tortuosity or "kink" is present in the proximal ureter. Color imaging was utilized to isolate the renal artery and vein away from the ureter (whixh does not demonstrate flow).