One important result of lake and reservoir enrichment is increased growth of microscopic floating plants, algae, and the formation of dense mats of larger floating plants such as water hyacinths (Photos 1 and 2) and Nile cabbage.
What is percutaneous biliary drainage? Percutaneous transhepatic biliary drainage is a procedure where a small, flexible, plastic tube is placed through the skin into the liver in order to drain an obstructed bile duct system. The liver produces bile which aids digestion of fats.
1 An external biliary drainage catheter goes through your skin and into your bile ducts. 2  The end of the catheter that is in your bile ducts is placed above the blockage (see Figure 2). 3  After this procedure you will have a catheter coming out of your body, attached to a drainage bag.