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. Pancreatic cancer can develop in different parts of the pancreas: in the head of the pancreas, the body or the tail. There are also different types of pancreatic cancer: exocrine pancreatic cancer, endocrine pancreatic tumours and lymphoma of the pancreas. The symptoms experienced by a person with pancreatic cancer will be different depending on the site and type of cancer. The choice of treatment and surgery types also vary depending on type, location and how advanced the cancer is, called staging. Most pancreatic cancers are diagnosed in the head of the pancreas.