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Black Kidney Sign: A New Computed Tomographic Finding Associated With the Hypoperfusion Complex in Children

Catalano, Onofrio A MD*; Napolitano, Marcello MD; Vanzulli, Angelo MD

Journal of Computer Assisted Tomography: July-August 2005 - Volume 29 - Issue 4 - p 484-486
doi: 10.1097/01.rct.0000166635.54240.0d
Abdominal Imaging: Case Report

The authors describe a new CT finding associated with the hypoperfusion complex in children: complete lack of enhancement of both kidneys without renal swelling, without subcapsular cortical rim enhancement, and without peripheral wedge-shaped areas of hypoattenuation. This “black kidney sign” was found in two severely injured children who died within a few hours after the CT examination. It may help to establish a diagnosis of severe hemodynamic instability and may be a negative prognostic factor.

From *AO G Rummo, Beltiglio, Italy; †AO San Giovanni Bosco, Torino, Italy; and ‡AO Niguarda Ca' Granda, Milan, Italy.

Received for publication April 3, 2005; accepted April 7, 2005.

Reprints: Onofrio A. Catalano, AO G Rummo, Via Provinciale 93, Beltiglio, 82010, BN, Italy (e-mail:

© 2005 Lippincott Williams & Wilkins, Inc.