Below is an instruction from Human. Write a response.
    ### Instruction:
    What is (are) Ectopic Kidney ?
    ### Response:
    The kidneys are two bean-shaped organs, each about the size of a fist. They are located near the middle of the back, just below the rib cage, one on each side of the spine. Every minute, a persons kidneys filter about 3 ounces of blood, removing wastes and extra water.
    