Paul Allen, Microsoft co-founder and owner of a range of Seattle business and philanthropic interests, is again undergoing treatment for non-Hodgkin lymphoma, the billionaire said in a statement on Monday.
Allen, 65 years old, was first treated for the cancer in 2009, and it subsequently went into remission. It was a similar form of cancer that led to his early retirement from Microsoft in 1983.
“My team of doctors has begun treatment of the disease and I plan on fighting this aggressively,” Allen said in a statement. “A lot has happened in medicine since I overcame this disease in 2009.