Sterling silver contains 92.5% silver. The rest is copper or some other metal. It is used for jewellery and silver tableware, where appearance is important. Silver is used to make mirrors, as it is the best reflector of visible light known, although it does tarnish with time.
There are three types of pancreatic tumors. Insulinoma: This is a rare type of pancreatic tumor that secretes insulin, which lowers the levels of sugar in the blood. Research indicates that only 10% of insulinomas are cancerous. Surgery is the only option for survival of insulinoma and 90% success rate is assured.
Types of pancreatic cancer. There are two types of pancreatic cancer, that of the exocrine gland and that of the endocrine gland. About 95 percent of pancreatic cancers begin in the exocrine (enzyme-producing) cells of the pancreas. 1  Exocrine tumors: Most tumors affecting the exocrine gland are called adenocarcinomas. 2  This type of cancer forms in the pancreas ducts.