I was diagnosed 2 years ago. I had a cat scan first which showed a growth on my liver. My GP sent me to a cancer doc who ordered a pet scan. The pet scan has been the best way to show the affected areas. I have had 3 so far. One to show the original areas affected, one to show that everything was normal and just recently another one because the lymphoma has returned. I suggest that you husband sees another doc right away. to address the blood tests, they give me them everytime I go to the doctor but they are not a very good tell in my opinion. None of my blood tests were much different before and after the cancer. I am sorry that you are going thru this and the night sweats are a sure sign of the problem. I suffer from them as well and so I hope you go to a new doctor RIGHT away!!! Good luckView Thread