How is your mother? What other symptoms are present? Were there initial diagnostic tests done? I understand your concern regarding this. Enlarged lymph nodes may be attributed to a variety of issues such as infection, autoimmune diseases as well as possible malignancy. To determine the underlying cause, additional diagnostic tests may need to be done such as following tests may be done blood tests, including liver function tests, kidney function tests, and CBC with differential; lymph node biopsy; chest x-ray; or liver-spleen scan. If it persists, it is best that you have this checked by a doctor for proper evaluation. Direct clinical examination and diagnostic tests may need to be done. Take care and do keep us posted.