My husband has been in and out of hospitals and doctors offices for the last three or four months. He started coughing blood back in March/April of last year, fairly large quantities, which has since abated on its own. Chest x-rays have shown an undiagnosed mass in right upper lobe. CT scan shows problem area(doctors here sometimes calling it a tumor, sometimes a mass...). Sputum tests came back negative. Bronchioscope(?)done with brushes to swab areas came back negative/inconclusive. Needle biopsy came back negative. Lymph nodes in the neck just above collarbone also seem to have come back negative. PET scan done however, came back as showing uptake(we did not see the results, doctor just told us, so we don't know how bad)We have just had a procedure done where doctor went in thru tracheal area to obtain samples from mass and saw something about nodules in the hilar area(?)of the lung; I am assuming doctor took sample of both areas, results will not be back for a while. Can nodes in neck have shown negative yet nodes in lung will show something is there? Can you explain a little more to me about this procedure and what else problem could be, in your opinion? Also, if it was cancer, would SOMETHING not have shown up by now, after all these tests? What else can you tell me about sarcosis? Not finding much specific to the lungs on the internet. Yes, husband is a smoker(trying to quit). Doctors not too forthcoming on other things this might be.....we are fearing the worst, very hard on the family. Thank you for your assistance, whatever it may be, during this time.