Question: is medullary sponge kidney a disease?
Answer: What is Medullary Sponge Kidney? 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. In a normal kidney, urine flows through these tubules as the kidney is being formed during a fetus' growth.