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Neoplasms of the Renal Medulla: Radiologic-Pathologic Correlation¹

¹ From the Department of Radiology, University of Texas Health Science Center at San Antonio (S.R.P.); Department of Pathology and Immunology (P.A.H.) and Mallinckrodt Institute of Radiology (C.O.M., W.D.M., M.J.S., K.T.B., J.P.H.), Washington University School of Medicine, 510 S Kingshighway Blvd, 9th Fl, St Louis, MO 63110. Presented as an education exhibit at the 2002 RSNA Scientific Assembly. Received April 13, 2004; revision requested June 10 and received June 21; accepted June 22. All authors have no financial relationships to disclose. Address correspondence to J.P.H. (e-mail: heikenj{at}mir.wustl.edu).

Tumors of the renal medulla cover a wide spectrum, with characteristic histomorphology and variable biologic profiles. Renal medullary tumors can be categorized into benign and malignant neoplasms based on histologic features and clinico-biologic behavior. They can be further classified into pediatric and adult tumors based on the patient age group. When small, renal medullary tumors may be differentiated from the more common renal adenocarcinomas by their central location and certain demographic characteristics. Although most large malignant medullary tumors demonstrate imaging findings that are indistinguishable from those of other renal malignancies, some tumors demonstrate imaging findings that may suggest a specific diagnosis.

© RSNA, 2005

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