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.
Internal biliary drainage is performed in patients with chronic biliary obstruction, especially those with obstruction due to cancer that cannot be treated surgically. The radiologist places an internal biliary stent, a segment of plastic or metal tubing, into the narrowed area of the bile duct.