Portal:Medicine/Selected picture/24, 2007
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![Thumb image](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Nephrocalcinosis.jpg/320px-Nephrocalcinosis.jpg)
Significant bilateral nephrocalcinosis (calcification of the kidneys) on a frontal X-ray (radiopacities (white) in the right upper and left upper quadrant of the image), as seen in distal renal tubular acidosis.