Neodymium is never found in nature as a free element, but rather it occurs in ores such as monazite and bastnÃ¤site that contain small amounts of all the rare earth metals. The main mining areas are in China, the United States, Brazil, India, Sri Lanka, and Australia.
Polycystic Kidney Disease. Polycystic kidney disease (also called PKD) causes numerous cysts to grow in the kidneys. These cysts are filled with fluid. If too many cysts grow or if they get too big, the kidneys can become damaged. PKD cysts can slowly replace much of the kidneys, reducing kidney function and leading to kidney failure.
Most cysts form because the teeth they are associated with have died (infection or trauma). Others form because of a mistake in the way the teeth have developed (including being unable to grow into the mouth properly). Rarely, dental cysts are part of a genetic syndrome that has other symptoms (eg Gorlin's syndrome). Your dentist or oral and maxillofacial surgeon will explain to you more about the cause of your cyst.