David Koop Conquered the World of Business. He Wasn't About to Let Cancer Put Him Under. David Koop had it all-a storied business career, beautiful son, and prospects as far as the eye could see. Then a surprise cancer diagnosis turned his life upside down. It was osteo sarcoma-a form of bone cancer-and it was growing on his spine. Doctors told him to get his affairs in order. More than three years later, Koop continues to beat the odds. Cancer: It's...