For tumors affecting the bottom half of the bile duct, the cancer is removed with a Whipple operation. For tumors in the top half of the bile duct, surgical treatment often requires removal of the tumor together with a liver resection (removal) in an attempt to provide a surgical cure.
How long for plastic water bottle to decompose? An average time for a plastic bottle to biodegrade fully is approximately 450-1000 years. However, there are many different kinds of plastic in the world, most commonly the haâ¦rd and reusable ones, which take a longer time, and the soft and non-reusable ones, which take a shorter time.
How long does paper take to decompose? Paper in a warm moist landfill will decompose in 2 or 3 weeks. If it is cooler and drier, then it will take longer. Paper will survive in a very dry climate for many hundreds â¦of years (people find old newspapers in the walls of their houses).