Almost 12 years ago, surgeons gave her just a 30pc chance of survival.

Eastern Daily Press: Marie Thompson, and daughter Summer (11) (hailed a miracle child after life-saving treatment at GOSH in London)Marie is set to have the Gt Ormond Street Hospital logo tattooed on her arm to help raise funds for the hospital.Marie Thompson, and daughter Summer (11) (hailed a miracle child after life-saving treatment at GOSH in London)Marie is set to have the Gt Ormond Street Hospital logo tattooed on her arm to help raise funds for the hospital. (Image: ©Archant 2014)

But now 'miracle baby' Summer Thompson is a healthy, happy schoolgirl and her mother is preparing to embark on a fund-raising effort to thank the hospital that saved her life.

Eastern Daily Press: Marie Thompson, and daughter Summer (11) (hailed a miracle child after life-saving treatment at GOSH in London) Marie is set to have the Gt Ormond Street Hospital logo tattooed on her arm to help raise funds for the hospital. Supplied pictures of Summer's time in hospital.Marie Thompson, and daughter Summer (11) (hailed a miracle child after life-saving treatment at GOSH in London) Marie is set to have the Gt Ormond Street Hospital logo tattooed on her arm to help raise funds for the hospital. Supplied pictures of Summer's time in hospital.

In 2002, Summer underwent vital life-saving treatment at Great Ormond Street Hospital (GOSH) in London after she was diagnosed with a rare heart condition.

Despite doctors warning mum Marie that Summer could die during the surgery, the seven-week-old baby overcame the odds and has gone on to make a remarkable recovery.

Over the years, Mrs Thompson has trekked across the Great Wall of China, held fashion shows and organised variety evenings to raise thousands of pounds for GOSH.

And next month, she is going to have GOSH's crying child logo, (pictured), tattooed on her wrist to raise more money for the hospital.

'A substantial amount has been raised over the years and it's all gone to GOSH for the cardiac side of things and also accommodation for families,' said Mrs Thompson, who lives in Carlton Colville.

'The tattoo may be a small thing, but to me it's a reminder of the great things they achieve.'

Mrs Thompson will never forget the moment she received the 'devastating news' about Summer's condition.

As well as having three holes in her heart, she was diagnosed with transposition of the great arteries in which the two main blood vessels leaving the heart – the pulmonary artery (which takes blood to the lungs to pick up oxygen) and the aorta (which takes blood from the heart to the body) – are swapped over.

Mrs Thompson said surgeons were astounded by Summer's rapid recovery from the operation.

'The team at GOSH saved my daughter's life after nine-and-a-half hours of complex heart surgery,' she said.

'It was a long journey, but Summer just seemed to improve so much day by day and the doctors were amazed.

'The hospital not only saved Summer's life, it saved our entire family's lives.' Summer attends Sir John Leman High School and has recently been back to GOSH for an annual check-up, where doctors were pleased with her progress.

Mrs Thompson is having her GOSH tattoo done at Skin Graphics in Lowestoft on March 13. To sponsor her, email marie_summer@hotmail.co.uk

Do you have a Lowestoft story? Email mark.boggis@archant.co.uk