Dad has a tumor

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I dont feel like going into detail but he has been having these headaches for a month. What hurts the most is that I cannot tell anyone in my family because no one knows and my mom caused it. A while back she hit him in the head with a hatchet right where the tumor is. I'm afraid my mom may try to commit suicide or something so that's probably why also. I don't really have anyone to share this with or would I in real life. But I just need to know what you guys know about tomors and do you think he'll need surgery?

also he won't do surgery because his mother passed from surgery removing a tumor