My dad rang me early January to say that a "shadow" had been found on his lung after a diabetic nurse saw that he was shaking and she arranged immediate tests for him. Following this, he said, he had a PET scan. This did not reveal any cancerous properties in his lungs but showed up a malignant mass in his colon. Needless to say I was devastated and angry at the same time as he had been through these tests and…