Credit: Todd Williamson/

Michael Douglas is prepping for eight weeks of chemotherapy and radiation to battle a tumor discovered in his throat, the actor's rep confirms to

The Oscar-winner, 65, is expected to make a full recovery. "I am very optimistic," Douglas tells Us in a statement.

The Hollywood veteran has been married to actress Catherine Zeta-Jones for nearly ten years, and they have two children: Dylan, 10, and Carys, 7. Douglas and his ex-wife Diandra also have a son, Cameron, 32.