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.
Rarer types. Rarer types of exocrine pancreatic cancer include: Cystic tumours. Cystic tumours cause a cyst or fluid filled sac in the pancreas. Most pancreatic cysts are benign but some are cancerous. Cystic cancers can have a better outlook (prognosis) than other types of exocrine pancreatic cancer. Cancer of the acinar cells.