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.
From northern Alaska down to the south of Mexico, one lake stands out as the oldest and most geologically unique in all of North America. In Lake County, California, just north of Sonoma and Napa counties, is Clear Lake with a ripe, young age of 480,000âyes, nearly half a million years oldâthe oldest lake on the continent. The average lifespan of a lake is usually about 10,000 years.