Computed tomographic distinction of perirenal liposarcoma from exophytic angiomyolipoma: a feature analysis study.

Purpose: To identify computed tomographic (CT) findings that distinguish perirenal liposarcomas from exophytic angiomyolipomas.

Materials And Methods: We identified CT scans of 20 patients (13 women and 7 men; mean age, 63 years) with either perirenal liposarcoma (n = 11) proven at histopathology or large exophytic angiomyolipomas (n = 9) determined by 2-year stability (n = 6) or histopathology (n = 3). Two independent readers unaware of the final diagnoses recorded the presence of the following CT findings: (1) tumoral vessel extending into the renal cortex, (2) tumoral vessel extending into the renal hilum, (3) renal parenchymal defect at the site of tumor contact, (4) intratumoral hemorrhage, (5) nonfat attenuating intratumoral nodules, and (6) calcification.

CT cholangiography in potential liver donors: effect of premedication with intravenous morphine on biliary caliber and visualization.

Purpose: To retrospectively determine whether premedication with intravenously administered morphine improves bile duct caliber and visualization in potential liver donors undergoing computed tomographic (CT) cholangiography.

Materials And Methods: This was a retrospective single institution study approved by the institutional review board and compliant with requirements of the HIPAA. Multidetector CT cholangiography was performed after slow infusion of 20 mL of iodipamide meglumine 52% diluted in 80 mL of normal saline in 143 consecutive potential liver donors (81 men and 62 women; mean age, 37 years); 43 received premedication with intravenous morphine sulfate (0.