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Related to poles of the kidney: upper pole of kidney

POLE. A measure of length, equal to five yards and a half. Vide Measure.

A Law Dictionary, Adapted to the Constitution and Laws of the United States. By John Bouvier. Published 1856.
References in periodicals archive ?
Accessory renal arteries are found frequently on the left side and the range of incidence is as high as 30-35% of cases & these arteries usually enter the upper or lower poles of the kidney [6].
A scant amount of uninvolved renal parenchyma was grossly evident at both poles of the kidney. The renal artery, vein, and attached segment of ureter were patent and showed no evidence of tumor involvement.
The revised practice guideline for the performance of an ultrasound examination of the abdomen and retro-peritoneum published by the American Institute of Ultrasound in Medicine (AIUM) in 2008 stated that "The examination should include long-axis and transverse views of the upper poles, mid-portions, and lower poles of the kidneys. The cortex and renal pelvises should be assessed.