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 Ovarian Cancer. 1  Different types of ovarian cancer are classified according to the type of cell from which they start. 2  Epithelial tumors. 3  Germ cell carcinoma tumors. 4  Stromal carcinoma tumors. 5  Small cell carcinoma of the ovary. Small cell carcinoma of the ovary (SCCO) is a rare, highly malignant tumor that affects mainly young women, with a median age at diagnosis of 24 years old. The subtypes of SCCO include pulmonary, neuro-endocrine and hypercalcemic. SCCO accounts for 0.1 percent of ovarian cancer cases.