Yes, I recently had a colos and ended up in a hospital emergency room.  During that time they took blood tests and a chest xray.  My gastro doctor told me I had especially low lymps 15 in a range of 25-45 and that they found a lump on my lung on the chest x-ray.  When I asked my doctor is I should have a cat scan she said no she would refer me to a pulminologist instead.  I thought a cat scan was a definitive when detecting lung cancer.
Hi, You recently had a close, ended up in emergency room, lymphocytes low, lump on the lung, referred to pulmonologist for investigations.  Cat scan is a test for diagnosis of and to exclude the lung cancer, so be patient and confident about the result.  Thank you.