Bear's paw sign annotatedSingle image from the CT with the right kidney outlined. Note how the dilated low density calyces form an appearance which has been likened to that of the pads of a bear paw.
From the case:
Xanthogranulomatous pyelonephritis - “Features are consistent with xanthogranulomatous pyelonephritis and pre-existing staghorn calculus.Related articlesxanthogranulomatous pyelonephrit...”
Used in the following article:
- Bear's paw sign - “The bear's paw sign is seen in xanthogranulomatous pyelonephritis and refers to the cross-sectional appearance of the kidney which is said to resem...”