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This topic has appeared in the trending rankings 1 time(s) in the past year. While it does not trend frequently, its appearance suggests a renewed or concentrated surge of public interest.
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Bear_paw_sign entered the ranking for the first time today at position #. This is its highest position ever recorded.
This topic has appeared in the English Wikipedia rankings 1 time. It first appeared on 2026-04-15 and was most recently seen on 2026-04-15.
The bear paw sign is a radiologic sign that describes the appearance of xanthogranulomatous pyelonephritis on computer tomography (CT) scans. Xanthogranulomatous pyelonephritis is a rare type of chronic pyelonephritis where the damaged areas of the kidneys are replaced by foam cells. On CT, multiloculated hypoattenuating masses with bright rim enhancement may be seen in the renal parenchyma, resembling the toe pads of a bear's paw. These masses are indicative of dilated renal calyces and xanthomas.
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