http://img.webmd.com/dtmcms/live/webmd/consumer_assets/site_images/articles/image_article_collections/anatomy_pages/Lungs_AnatomyPage2.jpg http://cdn3.healthcommunities.com/hcmedia/2011/08/lung_anatomy.jpg
http://lungcancercircleofhope.org/lcch09/Assets/graph09c.jpgThe leading cause of cancer deaths in the U.S. is lung cancer. It kills more people than prostate, breast, and colon cancer combined.
http://i.dailymail.co.uk/i/pix/2011/06/03/article-1393920-01B20A8A0000044D-38_468x267.jpg