Understanding the killer legs - DVT

DVT - Understanding the killer legs:

"SIXTY-year-old Steve was looking forward to see his grandchildren in Duluth, Minnesota. His wife, Marianne, died two years ago, and so he had to travel alone - all the way from Manila to Nagoya, Japan and then to Minnesota.

Steve never made it. He apparently died of a deep vein thrombosis (DVT) that reached his lungs. He collapsed in St. Paul/Minneapolis airport after complaining of breathing difficulties due to what has been dubbed 'economy class syndrome.' "