Hello-Thank you for providing such a great service! So grateful to have found this site. I'm 44, former smoker, diagnosed with stage 1a adeno Feb. 2016. Presented with pain in my back, chest, feeling of lump in throat, GERD and general malaise. X-Ray showed spot, Ct scan showed 2 cm spiculated nodule URL. Pet Scan NEGATIVE. Core biopsy positive, MODERATELY DIFFERENTIATED. Went to large cancer institute for 2nd option. They reviewed slides and said yes it's cancer and you need lobectomy. Path came back WELL DIFFERENTIATED. Had that done at that institute. In hospital had empyema continually on X-Rays so extended stay and chest tube. First CT July 2016, spot on LRL. CT Oct 2016 spot resolved, new one present. Dec. CT new 1.7 cm nodule. Biopsy scheduled 2 weeks out. Biopsy aborted as it shrunk so much. Surgeon thought it was an organizing pneumonitis. Have coughed up minimal blood twice, lump still in throat, GERD still present. After much research and thought I connected it to a root canal that I had years ago by a general dentist. Sure enough the restoration is leaking and needs to be removed. My understanding is Actin. Odont. can mimic lung cancer on CT and clinical presentation. So my question is, can a path report mistake lung cancer for Actin. Odont. as well? And maybe it was an infection all along?