My husband has been going through multiple tests over the last year. He has COPD and they have found a tumor in his lung. The tumor is cancer but they can't determine what kind? They said it showed signs of an upper GI cancer but all tests so far show no other cancer (PET, MRI of brain) waiting on the endcoscopy results from last week but that also looks clear according to the GI doctor. I have read about a lung cancer that mimics upper GI cancer in pathology called Pulmonary Enteric Adenocarcinoma. The doctors are considering it but we still don't know.. My poor husband has endured pretty much every test there is at this point. EKG's, EEG's, Heart Stress Tests and Monitoring, PET, CT and MRI scans, a lung biopsy, esophagus biopsy and upper GI biopsy and subcarnial lymph node biopsy. Additionally over this past year he has been diagnosed with Parkinsons (which they say he does not have now) and has had other symptoms which no tests show any disease (Kidney's Liver, etc). I have also read up on something called paraneoplastic symdrome which might account for his fainting spells? His lack of stable blood pressure? (his blood pressure can go from 200 to 74 in a matter of minutes (the upper blood pressure number…..systolic). This site has been so helpful to me on my breast cancer journey and also throughout his 'misdiagnosis' of Parkinsons over the past year. Hoping someone might have some insight or thoughts? We will meet with his new oncologist on Wednesday and I have a second opinion oncologist on board is needed. We are in Colorado with Kaiser and have been treated well but I am looking at a second medical source (the University of Colorado Health Center) as they have more resources and experts as well as clinical trials….but FIRST, we need a diagnosis and it's been over 6 weeks and we are no closer. Thanks for any insight you may have to share.