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Magnetic Resonance Imaging Findings in Solitary Fibrous Tumor of the Kidney

Johnson, Thorsten R C MD*; Pedrosa, Ivan MD*; Goldsmith, Jeffrey MD; Dewolf, William C MD; Rofsky, Neil M MD*

Journal of Computer Assisted Tomography: July-August 2005 - Volume 29 - Issue 4 - p 481-483
doi: 10.1097/01.rct.0000166637.24037.41
Abdominal Imaging: Case Report
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The magnetic resonance imaging findings in a patient with a large solitary fibrous tumor (SFT) of the kidney originating in the renal capsule are presented. SFT of the kidney is a rare, usually benign tumor with indolent clinical behavior. MRI revealed a diffusely hypointense mass on T2-weighted images without central necrosis despite the large size of the lesion. These imaging features, atypical for renal cell carcinoma, can suggest the diagnosis of SFT and may be an indication for attempting nephron-sparing surgery.

From the *Department of Radiology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; †Department of Surgery, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA; and ‡Department of Pathology, Beth Israel Deaconess Medical Center, Harvard Medical School, Boston, MA.

Received for publication March 29, 2005; accepted April 5, 2005.

Reprints: Ivan Pedrosa, Department of Radiology, Beth Israel Deaconess Medical Center, One Deaconess Road, Boston, MA 02215 (e-mail: ipedrosa@caregroup.harvard.edu).

© 2005 Lippincott Williams & Wilkins, Inc.