Farrah Fawcett believed she had been cured, she reveals in documentary

FARRAH FAWCETT has revealed she underwent painful experimental cancer treatment in Germany and believed she had been cured after declining conventional surgery.

But during filming of a long-awaited documentary about her two-and-a-half-year battle with the disease, doctors told her that despite six trips to private clinics, the cancer had spread to her liver.

At one point in Farrah's Story, which was screened in the US on Friday, the 62-year-old is heard sobbing: 'I thought I would be cured.'

The documentary, which Miss Fawcett had sold to America's NBC network for a reported $1.5million, was filmed and narrated by her best friend Alana Stewart, Rod Stewart's ex-wife.

Preliminary ratings showed Farrah's Story was NBC's most-watched program in its Friday night-time slot in more than a year, excluding ratings from the Olympics.