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Case Reports in Urology
Volume 2013, Article ID 498507, 3 pages
Case Report

The Case of the Wandering Kidney

1School of Medicine, Tufts University, Boston, MA 02111, USA
2Pediatric Urology, Maine Medical Center, Tufts University, Portland, ME 04102, USA

Received 22 October 2013; Accepted 19 November 2013

Academic Editors: L. Cormio, F. Koga, and B. Nardo

Copyright © 2013 David W. Sobel and Brian M. Jumper. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Nephroptosis is a controversial phenomenon well described in the literature. In this case report, we present a patient whose right kidney had “wandered” from its normal anatomic position in the retroperitoneum anteriorly and was in a fixed position anterior to the liver secondary to hydronephrosis. As opposed to the suspected mechanism of nephroptosis, we offer a hydraulic theory as to the origin of the energy required to cause this translocation. The work required to move the patient's kidney was generated by her cardiac output.