Ahead of a trip to Italy to celebrate her footballer son’s 35th birthday after backing him in his fight against rape claims, the mum-of-four admitted to new health problems.
She told a Portuguese TV station in a interview: “I was operated on another breast in Madrid, I’ve had radiotherapy and now I’m fighting for my life.”
The shock confession came after she attacked Cristiano’s rape accuser Kathryn Mayorga over her claims she was raped in a Las Vegas hotel.
Dolores said: “I have confidence in my son when it comes to what happened. When she went there, it wasn’t to play cards. It was to do something.
“I know the son I have.”
In 2009 former Man U star Ronaldo donated £100,000 to build a cancer centre at the hospital that saved his mum’s life.
He made the generous gift to the Portuguese League Against Cancer in his native Madeira so it could be used to build a centre in the Hospital Central in the island’s capital Funchal.
Dolores, 64, had a lump removed from her right breast at the hospital in summer 2007.
She later followed a successful course of radiotherapy and was understood to be taking anti-cancer drugs to keep the disease at bay when she suffered her new health scare.