Related Experiment Video
Updated: Jun 13, 2025

07:15
In vivo Macrophage Imaging Using MR Targeted Contrast Agent for Longitudinal Evaluation of Septic Arthritis
Published on: October 20, 2013
9.3K
[Xanthogranulomatous pyelonephritis : bear paw sign]
Manon Partoune1, Denis Danthine1
1Service de radiodiagnostic, CHU de Liège, Belgique.
Revue Medicale De Liege
|September 12, 2024
Abstract:
We present the pathognomonic image of the «bear paw sign» of xanthogranulomatous pyelonephritis, a rare form of chronic pyelonephritis typically occurring in association with obstructive uropathy (especially with staghorn calculi) and recurrent urinary tract infections.

