How does brain radiation vs. targeted radiation work at 70?

Question

Hi doctor,

I am writing on behalf of my grandfather, who is 70 years old and has been told he needs radiation for his lung cancer, which has now reached his brain. The doctors mentioned two options, whole-brain radiation and targeted radiation, but did not clearly explain the differences.

How does whole-brain radiation differ from targeted radiation for a 70-year-old patient in terms of side effects and effectiveness?
Which option would be safer given his age and overall weakened condition?

We are struggling to understand which path is less risky for him right now.

Please advise.

Thank you.

Answer 1

Hello,

Welcome to icliniq.com.

I am deeply concerned about your worries.

I hope you are doing well, and I wish your grandfather a speedy recovery. In patients around seventy years old, we often prefer targeted therapy instead of chemotherapy or radiotherapy because the side effects are usually fewer for the patient while still providing good tumor control.

Regarding the brain metastasis, the choice of radiation depends on the type of lung cancer cells because there are many types. For example, small cell lung cancer usually requires whole brain radiation and sometimes spinal radiation because we treat the existing metastasis and also provide protection against further spread since this type commonly spreads repeatedly to the brain, so whole brain radiation acts as prophylaxis.

If it is another type of cancer, we may give radiation only to the area of the tumor, although I often prefer whole brain radiation to eliminate any unseen microscopic cancer cells that may not appear on imaging.

I hope this is clear, and I encourage you to provide your grandfather with emotional and nutritional support during this stage, and do not worry because lung cancer, even at stage four, can often be controlled well, and patients can live a stable life with minimal side effects.

Do follow up whenever needed.

Let me know if I can assist you further.

Thank you.