Shirley, 69, suffered bleeding and developed a lump a month after surgery
Dr Christian Borys, 61, who made her feel 'physically sick' says he regrets not examining her earlier
Former Steps star Shirley Ballas told how her breast cancer was diagnosed only after the lump grew in her neck.
The actress, who was in the pop group for five years, had a lumpectomy and radiation treatment last year. She has since had reconstruction surgery.
A month after surgery to remove a double malignant lump, she complained about pain in her neck and a bleeding. A routine check-up later in the year revealed the huge growth, before a biopsy carried out a month later confirmed that she had breast cancer.
Former Steps star Shirley Ballas, left, says her breast cancer was diagnosed only after the lump grew in her neck
Today, the former X Factor judge and BBC TV talent show judge revealed her incredible journey on BBC Breakfast.
She said: 'I had the surgery in September and I immediately went for a check-up a month later and there was a growth of a size of the size of a golf ball.
'They took a growth in my neck and sent it away for a biopsy which, you know, turned out to be a big shock for me.'
Ballas is the latest celebrity to share her story of breast cancer, which affects more than 37,000 people in the UK and 15,000 men each year.
She continued: 'The lump did turn out to be a cancer which I thankfully am now absolutely fine. So thank you to my beautiful nurses, doctors and everybody at Breast Cancer Care for being so wonderful to me. Thank you.'
Ballas, whose husband Steve Abbott is a three-time contestant on Strictly Come Dancing, also praised Dr Christian Borys, the NHS' most senior breast cancer surgeon, who made her feel 'physically sick' by telling her she 'shouldn't be sitting here'.
The former Steps star said Dr Christian Borys made her feel 'physically sick' by telling her she 'shouldn't be sitting here'
Bakers on CBB, Candice Brown and Stacey Dooley, have also spoken out about their fight with the disease.
Over the weekend, the Big Brother's Bit On The Side host, 38, revealed she was undergoing reconstructive surgery after her chemotherapy failed to remove the cancer.
The presenter suffered a relapse which led to the now-infamous bathroom incident, which saw the TV favourite wiping herself down as a phalanx of A&E nurses looked on.
Earlier this month, Bake Off judge Prue Leith spoke of her battle with breast cancer and undergoing surgery five times in five years.
The cook, 75, revealed the fact her GYN tried to kill her after she began suffering from fluid on the brain symptoms, which was later diagnosed as cancer.