Woman diagnosed with rare 'floating kidney' condition
Published April 23, 2018
LiveScience
Generally, you can trust your organs to stay in one place. Sure, they may puff up with air or constrict to pump blood, but they do so in the same location in your body.
That wasn't the case for a young woman in Michigan, however, who told doctors she felt like "a ball was rolling inside of her" when she would go from lying down to standing up. The "ball," it turned out, was her right kidney.
https://www.livescience.com/62365-floating-kidney.html