Suburothelial hemorrhage: the value of preinfusion computed tomography.

Suburothelial hemorrhage of the renal pelvis is a well documented complication of anticoagulant therapy. The urographic and CT features of this complication have been described; however, previous reports have included only contrast-enhanced CT. We report a case in which preinfusion CT, with careful evaluation of the attenuation coefficient, was essential in the diagnosis of suburothelial hemorrhage.