RYAN O'Neal said the prognosis is positive for his recovery from recently diagnosed Stage Two prostate cancer.
The 70-year-old actor said that he was "shocked and stunned by the news" but feels fortunate the disease was caught early.
Doctors expect him to make a full recovery.
O'Neal said he is grateful for the support of his friends and family.
He also advocates regular exams because early detection is the best defence against prostate cancer.
The actor's memoir about his romance with Farrah Fawcett, Both of Us: My Life With Farrah, will be published on May 1.