How is PKD different from simple kidney cysts?
It is common for our kidneys to develop small, fluid-filled cysts as we age. These are called simple kidney cysts and are almost always benign (not harmful). In contrast, PKD is a genetic disease that causes many cysts to form in the kidneys. These cysts grow out of control and can overrun the kidneys. In time, the PKD cysts damage the kidneys and can lead to kidney failure.