Brief Answer: Avoid exposure to chemicals and radiation, infecti Detailed Answer: Hello, I have gone through your query and understand your concern. You have to understand that exact cause of lymphoblastic lymphoma is not known still. But many research studies shows the link between exposure to radiation or pesticides,genetics and congenital or acquired immune suppression with Lymphoplastic lymphoma. There is no valid indicator to predict the risk of your children may get Lymphoblastic lymphoma or not. It is better to follow these. 1. Avoid them from any exposure to chemicals like benzene 2. Avoid them from any radiation exposure like x-ray or CT scan 3. Immediately take care of any infections like upper respiratory infections and Urinary tract infections 4. Avoid treatment with immune suppression drugs like steroids or chemotherapeutic drugs. 5. Get thorough health check up pediatric oncologist now and for check for any possible findings like any enlarged lymph nodes. 6. Watch for symptoms like fatigue, recurrent fever and infections etc and treat them properly Hope this helps. Please write back if you have any further doubts and clarification. Wishing your child good health.