Prostate cancer has overtaken breast cancer to become England's most commonly diagnosed cancer, as increasing numbers of men are coming forward for checks. David Cameron revealed that he had been diagnosed with prostate cancer, after his wife Samantha urged him to get checked. Lord Cameron, 59, said a prostate specific antigen (PSA) test revealed his diagnosis. He said: "You always hope for the best. You have an MRI scan with a few black marks on it. You think, ‘Ah, that’s probably OK.’ But