The skin cancer was discovered in June, but the 47-year-old Bowden waited until the Nationals' season ended to have the operation.
"In retrospect, I would advise anybody to get it done as soon as possible. Because that type of cancer can grow extremely fast," Bowden told The Washington Post, which first reported the news Tuesday.
Last-place Nats shake up staff as 5 coaches fired
I Wish I Wasn’t Black - Asprilla
