Hi I am a 45 year old female who has smoked about a pack of cigarettes a day for 29 years. My yearly CT scan showed a 4mm ground glass nodule that was new. Its in upper left lobe. Last year the scan said I had signs of early COPD. My Mom passed away in 1995 of Mesothelioma. Contracted from my Dad. My big Sister was diagnosed 2 years ago with small cell lung Cancer. With our background should I be worried about finding? What would your opinion be for treatment?