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Article
December 3, 1982

Computed Tomography in the Diagnosis and Management of the Renal Mass

Author Affiliations

From the Department of Radiology, University of North Carolina School of Medicine, Chapel Hill (Dr Mauro); Mallinckrodt Institute of Radiology, Washington University School of Medicine, St Louis (Drs Balfe, Weyman, Lee, and McClennan); and Department of Diagnostic Radiology, University of Alabama School of Medicine, Birmingham (Dr Stanley).

JAMA. 1982;248(21):2894-2896. doi:10.1001/jama.1982.03330210074045
Abstract

IN RECENT years, computed tomography (CT) has been found extremely useful in the diagnosis and management of renal masses. Computed tomography provides an accurate morphological picture of the renal mass, and its precise contrast resolution allows identification of characteristic attenuation values as well. Often, the CT diagnosis is conclusive enough to obviate further diagnostic or preoperative radiological studies.

CYST  Computed tomography is highly accurate in the diagnosis of the simple renal cyst and, therefore, is reliable in the differentiation between a cyst and a renal neoplasm. Renal cysts may be cortical, intrarenal, or parapelvic and can be diagnosed confidently when the mass fulfills the following CT criteria: (1) uniform, near-water density attenuation values, (2) imperceptible thickness of wall if a portion of the cyst projects beyond the surface of the kidney, (3) sharp separation from normal renal parenchyma, and (4) lack of enhancement after intravenous (IV) administration of contrast (Fig

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