Below is an instruction from Human. Write a response.
    ### Instruction:
    What to do for Medullary Sponge Kidney ?
    ### Response:
    - Medullary sponge kidney, also known as Cacchi-Ricci disease, is a birth defect where changes occur in the tubules, or tiny tubes, inside a fetus kidneys.  - Symptoms of medullary sponge kidney do not usually appear until the teenage years or the 20s. Medullary sponge kidney can affect one or both kidneys.
    