I have three kidneys. I had a CT scan and they said one of the kidneys was black. What does that mean and what are the risks?

The medical term for multiple kidneys is “supernumerary kidneys”.  This is a congenital condition and means that you were born with extra kidney tissue.  This extra kidney may or may not work properly.  I do not understand the term “black kidney”.  This is not a term I use or understand.  I suggest that you discuss your concerns with your physician.


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