Yes you can answer my question now.  My son has been battling cancer for 4 years and was 28 when this started. Last problem involved spinal cord and brain which he tolerated well but one month after tomo his memory is going         and he is confused off and on. He cannot continue to work due to risk of error. We are all very upset. Has 3 cchildren under 6.
Thanks for your question on Chat Doctor. I can understand your concern. Yes, cancer can cause memory loss. If cancer spreads to brain and involve frontal lobes of brain then memory loss and behavioral changes can occur. So better to consult oncologist and get done clinical examination and MRI brain to rule out brain metastasis. Hope I have solved your query. Wishing good health to your son. Thanks.