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Clin Case Rep. 2017 Aug 24;5(10):1720-1721. doi: 10.1002/ccr3.1143. eCollection 2017 Oct.

Extrarenal pelvis mimicking hydronephrosis: a case for caution.

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1
Division of Nephrology, Hypertension and Renal Transplantation University of Florida Gainesville Florida.

Abstract

Extrarenal pelvis is an anatomical variant that appears as a large hypoechoic mass just outside the renal sinus and can be confused with hydronephrosis, especially on a point-of-care renal ultrasound. Unlike hydronephrosis, it is not associated with dilated calyces, parenchymal thinning, hydroureter, or enlarged kidney per se.

KEYWORDS:

Extrarenal pelvis; hydronephrosis; renal ultrasound

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