Seahawks and Trail Blazers owner Paul Allen announced Monday that he has started treatment for non-Hodgkins lymphoma disease.
Allen, 65, was originally treated for the disease in 2009. He said that he is working with a team of doctors to fight the latest incident aggressively.
"A lot has happened in medicine since I overcame this disease in 2009," Allen said in a statement. "My doctors are optimistic that I will see good results from the latest therapies, as am I."
Allen, who co-founded Microsoft in 1975, said that he plans to continue his involvement with the Seahawks and Blazers during treatment.