Seattle Seahawks and Portland Trail Blazers owner Paul Allen says he's recently learned that the non-Hodgkin lymphoma he was treated for in 2009 has returned.
The 65-year-old Allen shared the news Monday, writing that his team of doctors has started treatment and that he plans on fighting the disease aggressively.
"A lot has happened in medicine since I overcame this disease in 2009," Allen wrote. "My doctors are optimistic that I will see good results from the latest therapies, as am I. I will continue to stay involved with Vulcan, the Allen Institutes, the Seahawks and Trail Blazers, as I have in the past.