After receiving a diagnosis of prostate cancer, Scott Blackmun, the chief executive of the United States Olympic Committee, announced he would not travel to South Korea for the opening ceremony of the Olympics next month.
Blackmun broke the news to U.S.O.C. staff members with an email on Monday. In the email, he said that his doctors had recommended he seek immediate treatment, and that in all likelihood he would not be able to travel to Pyeongchang even after the opening ceremony, which will be held on Feb. 9. No changes in the power structure of the U.S.O.C. are expected.