Sarah Best, 30, underwent radiotherapy and chemotherapy to treat mouth cancer, which was diagnosed when she was four months pregnant with her first child. The mother-to-be was told the cancer would spread if she did not have radiotherapy.
Ms Best used two lead shields to protect baby Jake from the radio waves, which may be harmful, and unexpectedly went into labour shortly after her last course of the treatment. The first lead guard, which was 5cm (2 ins) thick, was built to cover her bump during the 20-minute treatment sessions and was suspended above her while the second was held at her side.
Ms Best, from Leamington Spa, Warks, is thought to be the first mother to give birth to a healthy baby after having cancer treatment. Jake was born five weeks early weighing 4lb 10oz. "I was devastated when I was told I had cancer," said Ms Best, who had an operation to remove a tumour from her tongue.