Have suffered the slings and arrows of outrageous fortune and had half a lung taken away about 18 months ago.Scans all clear to date so far so good. Have developed a persistent cough though and have had it since last July. Doc's throwing all sorts at it but still not going. Am told no cancer present, has anyone any ideas or know anyone else who has had the same? Oh, used to be a smoker, so serves me right!!