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.
Ovarian tumors can be categorized as epithelial, germ cell, sex cordâstromal, or metastatic. Epithelial tumors are the most common histopathologic type of malignant ovarian tumor (85% of cases) (Fig 1) (5,6). Subtypes of epithelial tumors include serous, mucinous, endometrioid, clear cell, and Brenner tumors.