As a GP, Lisa McGrath had always considered herself healthy, but then, at 42, she found a lump in her breast, and was diagnosed with advanced breast cancer. It was, as Lisa recalls seven years later, a complete shock. 'I have never smoked and hardly drink,' she says. 'I run regularly and the most overweight I've ever been is by 7-10lb. I have had four babies, all breastfed, and I have no family history of breast cancer.' The cancer had spread into her left armpit and into most of the lymph nodes. 'It had grown in a sheet rather than a tight ball - a type of tumour that's harder to detect and is often bigger when it's found,' she says.