[What you can do for your child who has childhood cancer] When I was 10 years old (3rd grade), I had cancer. If you’re 10 years old, you’ll be able to slowly understand what you’re doing if you explain. But for younger children, it can be difficult to explain and understand. There are some things to be aware of for such small children. Even a small child knows what kind of situation he / she is from the complexion, speaking style, gestures, etc. of the adults around him. If you decide not to tell (not tell) your child about your illness, you have to be very careful about your frivolous behavior. Even if you do not understand an adult’s conversation, you may feel a bad situation from the adult’s way of speaking and facial expressions. I became a cancer survivor when I was 10 years old, but the very important and difficult thing that the adults around me gave me was “notifying me of cancer”.