On 29 July I was told in no uncertain terms that I had a lung malignancy. On 18 August a thoracic surgeon told me that he was 96% certain that I had cancer. On 27 August I had a PET scan, and today I heard the result. NO CANCER. The scan is based on radioactive glucose — cancer cells feed on glucose, and cancerous growths light up the dark screen. The surgeon now believes that the spot on my lung is scar tissue. So that is a welcome reprieve. Don’t announce that you have cancer before your PET scan.