Thirteen patients with a variety of renal pelvic filling defects were evaluated using computed tomography (CT). Nonopaque calculi and some blood clots can be more accurately differentiated with this modality than has heretofore been possible. In transitional-cell carcinoma of the renal pelvis, the main value of CT appears to be in tumor staging. CT may also be helpful where urography cannot discriminate between extrinsic compression and true intraluminal renal pelvic defects.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.