Sometimes bronchoscopy is used to treat lung problems. It may be done to insert a stent in an airway. An airway stent is a small tube that holds the airway open. It's used when a tumor or other condition blocks an airway. In children, the procedure most often is used to remove something blocking an airway.
Spanning the border from Minnesota into the Canadian provinces of Ontario and Manitoba, Lake of the Woods is an enormous body of water over 68 miles long, 59 miles wide, with 25,000 miles of shoreline-the world's longest lake shoreline.
Related: World's Deepest Lake. The salty Caspian Sea has the greatest surface area of any lake at 143,200 square miles (370,886 square kilometers). Lake Superior, on the United States/Canada border is the named freshwater lake with the greatest surface area at 31,700 square miles (82,103 square kilometers).he largest lake in the United States on the basis of water volume is Lake Superior with a volume of 2904 cubic miles (12,100 cubic kilometers). Lake Michigan-Huron has the largest surface area in the United States at 45,410 square miles (117,611 square kilometers). Contributor: Hobart King.