I have been feeling ill for 5months. I have lost 13lbs, have constant low grade fever, body aches all over, tachycardia. I have had 3 chest x-rays, ct scan of head, chest, abdomen, and pelvis. EGD. Bloodwork which included esr, c-reactive protein,cbc,spep. Tested for lyme, EBV,HIV Everything has come back normal. I now have noticed a lump on the right side of my neck. It is about the size of an almond and seems to be able to move around when touched. Is it possible to have lymphoma with no other signs of swollen lymph nodes on my cat scans? I have experience about 3 episodes of night sweats about 1 month ago.