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Incidental Adrenal Lesions: Principles, Techniques, and Algorithms for Imaging Characterization¹

¹ From the Department of Radiology, Massachusetts General Hospital, White Building 270C, 55 Fruit St, Boston, MA 02114 (G.W.L.B., M.A.B., P.F.H.); and Department of Radiology, Warren Alpert Medical School of Brown University, Rhode Island Hospital, Providence, RI (W.W.M.). Received June 5, 2007; revision requested August 6; revision received August 31; accepted January 16, 2008; final version accepted February 27. Address correspondence to G.W.L.B. (e-mail: gboland{at}partners.org).

Incidental adrenal lesions are commonly detected at computed tomography, and lesion characterization is critical, particularly in the oncologic patient. Imaging tests have been developed that can accurately differentiate these lesions by using a variety of principles and techniques, and each is discussed in turn. An imaging algorithm is provided to guide radiologists toward the appropriate test to make the correct diagnosis.

© RSNA, 2008