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 many years does it take to decompose a... PLASTICS: -plastic bag: 10-500 years. -plastic straw: up to 200 years. -plastic water bottle: 450 years. -plastic beverage container: 500+ years. -plastic 6 pack holder: 450 years.