title: Extrarenal abnormalities in Tc-99m DTPA renal perfusion studies due to hypervascularized tumors.
abstract: In cases of impaired renal perfusion and/or function, Tc-99m DTPA renal flow studies are often used as screening procedures. Besides the demonstration of pathological changes in renal perfusion and/or function, various extrarenal abnormalities may sometimes be detected. Three cases of hypervascular tumors were detected during the course of Tc-99m DTPA renography. These findings stimulated further diagnostic clarification revealing extended extrarenal lesions associated with several different etiologies: angiomyolipoma in tuberous sclerosis, extramedullary manifestations of plasma-cytoma, and metastasis of renal carcinoma. One should be aware of these extrarenal abnormalities in renal flow studies since these three tumor entities frequently exhibit increased vascularity.
mesh_terms: D000293:Adolescent; D000368:Aged; D002292:Carcinoma, Renal Cell / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000556:secondary; D006391:Hemangioma / Q000000981:diagnostic imaging / Q000503:physiopathology; D006801:Humans; D007668:Kidney / Q000000981:diagnostic imaging* / Q000503:physiopathology; D007677:Kidney Function Tests; D007680:Kidney Neoplasms / Q000000981:diagnostic imaging* / Q000503:physiopathology / Q000556:secondary; D008067:Lipoma / Q000000981:diagnostic imaging / Q000503:physiopathology; D008297:Male; D008875:Middle Aged; D009942:Organometallic Compounds; D004369:Pentetic Acid; D010954:Plasmacytoma / Q000000981:diagnostic imaging / Q000503:physiopathology; D011877:Radionuclide Imaging; D016284:Technetium Tc 99m Pentetate
chemical_list: D009942:Organometallic Compounds; D004369:Pentetic Acid; D016284:Technetium Tc 99m Pentetate