What Does This CAT Scan Showing Spot In Left Lower Lobe Of Lung Indicate?

Question : I asked a 2nd question but have not gotten a reply. the spot was in my lower left lobe and the configuration was not anything round it was of different uneven shape.. 2cn of size. . I had a cat scan on 9/13/13 and another one on 6/10/13. the reason for the cat scan was just precautionary because I was a heavy smoker

I had a cat scan on 9/3/13 and everything was fine. on 6/4/14 it showed a 2cn ununiformed lesion in my lower left lung. On 1/14 I developed a every cough mainly every night in Palm XXXXXXX and when I moved back to XXXXXXX on 5/15 the cough reduced to less than 10% of the time. I am no longer a smoker for 2 years. also, on1/15 I cheated and smoked for 1 month an for 2 days I spit up blood so I stopped smoking and the blood disappeared completely. 2 questions. 1) is it likely I could have pneumonia and would that show a lesion? 2) if cancer, would it be caught early enough to have a cure or is it possible to be stage 4.
I will try again. cat scan info. lung window images: mild interstitial density is seen in the posterior right apex which is stable. mild diffuse generalized increased density is present throughout right lung. near the right cardiophrenk angle the right middle lobe shows branching linear areas of density which extend between the diaphragmatic and chest wall pleura to the pericardium and appear stable. Stable mild interstitial pleural density is also present in the medial right lower lobe. the left lung apex show a minimal posterior pleural irregularity. the medial basal segment of the left lower lobe show a peribronchial thickening., increased interstitial density, and reticulonodular change, associated with loss of volumn. this results in a plaque-like mass measuring 1.7 x 5.1 cm seen last on 9/3/13. the left hilum on 9/3/13 showed a 0.6 x1.5 cm semilunar calcification in close approximation to the lower left lobe pulmonary artery. a soft tissue mass has developed in the interval around this calcification measuring 1.8 x 2.5 cm which nis thought to represent an enlarged left hilar lymph node . the aortopulmonary window nodes are not enlarged; subcarinal lymph nodes appear stable but mildly prominent. please advise your opinion of what you think!! I took my last cat scan 6/10/14 which is 9 months from 9/3/13. XXXXXXX

I will try an shorten the question as I am not getting any answers; from my PET scan , the final said IMPRESSION : I take to mean summary. anyway it states 1) left hilar and infrahilar masses, most likely lymph node metastatic disease. the primary tumor may be the area of consolidation in the medial left lower lobe or may be contiguous with one of the hilar metastases. 2) no evidence of distant metastatic disease. do you think I caught it early ? does it require major surgery? my right lung was clear.

Dr De; thank you for you response. I need to ask you a couple more questions. from the Pet scan the last heading was IMPRESSION. does that mean summary? there was info on the report with more detail as to size. do you need that info? it said there is no abnormal FDG activity in the abdomen or pelvis. Physiologic activity is seen in the kidneys, ureters, bladder, and bowel. does that mean they are functioning ok? when I get done here I will give your review which so far you have been a great help and will show my appreciation when done. I am prepared for good and bad news. thank you again

if I close this session and I wish to leave Dr. De a tip to show my gratitude can I still ask him questions and stay in touch with him or should I wait to finish my questions before I close the session?