I had an ultrasound which showed tumors in my lymphatic system.  I have experienced severe back pain, a painful lump under my right arm and most recently pain in my left arm from the shoulder to the elbow.My appetite has diminished causing a slight weight loss and my energy level is low.
HI. There are no known diseases that cause the things you have written. IT is possible you have lymph node affection or a very rare liposarcoma/ or it is possible that you have an infiltration by an infection or cancerous cells. I think you should go for a second opinion and re-investigate at other place,