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Impact of magnetic resonance on staging of renal carcinoma
Authors:Parvati Ramchandani M.D.    Renate L. Soulen M.D.    Robert I. Schnall M.D.    E. James Seidmon M.D.    Arnold C. Friedman M.D.    Paul D. Radecki M.D.  Dina F. Caroline M.D.
Affiliation:1. University College London, Institute of Ophthalmology, London, UK;2. Neurexpert Ltd., London, UK;1. Division of Prehospital Services, Oslo University Hospital, Ullevål Hospital, P.O. Box 4956 Nydalen, NO-0424 Oslo, Norway;2. Faculty of Medicine, Institute of Clinical Medicine, University of Oslo, P.O. Box 1078 Blindern, NO-0316 Oslo, Norway;3. Oslo Sports Trauma Research Center, Department of Sports Medicine, Norwegian School of Sport Sciences, P.O. Box 4014 Ullevål Stadion, NO-0806 Oslo, Norway;4. Section for Physiotherapy, Department of Clinical Services, Division of Medicine, Oslo University Hospital, Oslo, Norway;5. Department of Rehabilitation Science and Health Technology, Faculty of Health Sciences, OsloMet – Oslo Metropolitan University, Oslo, Norway;6. Norwegian Institute of Public Health, Oslo, Norway, Health Services Research Centre, Akershus University Hospital, Lorenskog, Norway;7. University Hospital Schleswig-Holstein, Institute for Emergency Medicine, Holzkoppelweg 8-12, Kiel, Germany;8. Department of General Practice, Institute of Health and Society, University of Oslo, P.O. Box 1130 Blindern, NO-0318 Oslo, Norway
Abstract:
Computerized tomography (CT), ultrasound, and angiography have been used for staging renal cell carcinoma. CT has proven to be the most reliable and sensitive of these techniques. Magnetic resonance (MR) has emerged recently as a viable alternative imaging modality. Five patients with renal cell carcinoma and suspected caval involvement were evaluated by CT, ultrasound, and MR. Caval extension and the differentiation of intra-versus retrocaval tumor was seen with greater clarity on MR scans; perinephric extension was seen equally well with both modalities. The primary tumor itself was better defined with CT. In patients with equivocal findings regarding the renal veins or inferior vena cava, MR is a valuable adjunct in preoperative evaluation. In patients at high risk for contrast administration, MR is the staging modality of choice.
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