Scar sign of renal oncocytoma: Magnetic resonance imaging appearance and lack of specificity |
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| Authors: | David S. Ball D.O. Arnold C. Friedman David S. Hartman Paul D. Radecki Dina F. Caroline |
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| Affiliation: | 1. Department of Diagnostic Imaging, Temple University Hospital, 3401 North Broad St., 19140, Philadelphia, PA, USA
2. Department of Radiologic Pathology, Armed Forces Institute of Pathology, Washington, DC, USA
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| Abstract: | This case report illustrates the magnetic resonance imaging (MRI) appearance of a typically asymptomatic renal oncocytoma as a homogeneous mass of medium signal with a stellate central region of decreased signal, representing the central scar. The MRI was correlated with computed tomography (CT), ultrasound (US), and gross pathologic appearance. The appearance of a central scar is not specific for oncocytoma and does not exclude renal cell carcinoma, as illustrated by a second case. |
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