Three days after he refused to leave the hospital, in September 2002, a blood test confirmed he had cancer and it had spread. "We just couldn't believe it," said Mrs Elmy. "You believe what your doctor tells you." Professor Tim Oliver, head of the oncology unit at Barts where Mr Elmy was later transferred, said he had endured the maximum possible delay in diagnosis before symptoms would have been impossible to miss. "Undoubtedly we could have been treating him earlier," he said. "There would have been a possible 10 to 20 per cent better chance than when we started at the later stage."