From Doug Tucker:
Hunt has battled cancer for several years and was hospitalized the day before Thanksgiving with a partially collapsed lung. Doctors discovered that the cancer has since spread, and Hunt has been under heavy sedation since last week.
Everyone here at AP certainly wishes Lamar and the Hunt family the best of luck. In case you are unfamiliar with Lamar Hunt's momentuous contributions to the game you know as football today, here's a quick take from his Wikipedia entry:
In response, in 1960 Hunt led several other investors in forming the AFL. Hunt encouraged, wheedled, and cajoled seven other like-minded men to form this new league. One of them, fellow Texan Bud Adams of Houston, had likewise tried but failed to be granted an NFL franchise. Lamar Hunt's goal was to bring professional football to Texas and to acquire an NFL team for the Hunt family. Hunt became owner of the Dallas Texans, and hired future hall-of-famer Hank Stram as the team's first head coach.