| 单词 | bear’s-paw sign |
| 释义 | bear’s-paw signbear’s-paw signA radiologic sign referring to the cross-sectional appearance of the kidney which has been fancifully likened to bear’s paw: the renal pelvis is contracted while the calyces are dilated, thus mimicking the paw’s toe-pads. It is regarded as a classic finding in xanthogranulomatous pyelonephritis, but has also been described in ongenital ureteropelvic junction obstruction. |
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