270 ) A 62 year old man presents with complaints of chronic cough for the past two years. Cough occurs mostly in the morning and is associated with mild sputum production. Lately, he has noticed mild shortness of breath on exertion. He denies any chest pain or weightloss. He has a 50 pack year history of smoking. He has been counselled against smoking several times in the past but he believes it is quite difficult for him to quit smoking. He is concerned about lung cancer and requests if he can placed on an annual screening protocol. A chest x-ray and a CT scan of the chest show changes consistent with chronic obstructive pulmonary disease. There is no evidence of malignancy. Which of the following is the most appropriate screening recommendation for this patient?
A) Sputum Cytology every 6 months
B) Chest X-ray annually
C) No Screening
D) Spiral CT scan annually
E) PET scan annually