Dana, who has never smoked, was heartbroken after the Superman actor's death in October last year (04), but his long fight against his spinal injuries following a horse riding accident, is inspiring her determination to beat the disease.
The 43-year-old actress says, "I have recently been diagnosed with lung cancer, and am currently undergoing treatment. I have an excellent team of physicians, and we are optimistic about my prognosis.
"Now, more than ever, I feel Chris with me as I face this challenge. As always, I look to him as the ultimate example of defying the odds with strength, courage and hope in the face of life's adversities."
The couple have a 13-year-old son WILL.