![](http://www.alamy.com/thumbs/6/987B56AE-84FD-42F4-9244-1E103163224D/2ACPYG7.jpg)
Kidney stones. Computer artwork showing a section through a human kidney containing kidney stones (yellowish, right). The ureter (tube) that carries u
Kidney stones. Computer artwork showing a section through a human kidney containing kidney stones (yellowish, right). The ureter (tube) that carries urine from the kidney to the bladder (bottom centre) can also be seen with a stone having travelled over half way along its length. Kidney stones are solid accumulations of dissolved urinary minerals that have come out of solution and built up into hard stone-like objects. They typically leave the body without any symptoms when passing urine. However, if they grow to a sufficient size they may cause an obstruction in the urethra, leading to severe pain.
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Photo credit: © HANS-ULRICH OSTERWALDER/SCIENCE PHOTO LIBRARY / Alamy / Afripics
License: Licensed
Model Released: No
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