<s>[INST] j have a left leg retaining fluid with a very painful heel..burning and sharp pains. what can be the cause and what can I do? I had non hodgkins lymphoma three years ago and I am still having booster treatments evert three months. the swelling first started after I had a biopsy on on the lympb node in the liower back can dr Mathew Mintz reply [/INST] Dear, There must be the recurrence of the disease or must be residual disease after the initial treatment for non Hodgkin lymphoma. The swelling of the leg is because of the pressure on the lymphatic vessels by the tumor. If the chemotherapy has not relieved it, did your doctors advise local radiotherapy in the inguinal area. You can discuss it with your doctor, and he will be the right person to tell you whether you could be benefited with it. Residual disease after chemotherapy is most of the time taken care with Radiotherapy. Truly, </s>