Oh OP, like everyone else, I’m keeping everything crossed that the news you get is of something simple, non dangerous and treatable.
But I know where your mind is going, and if it does turn out to be a tumour, then its worth you
knowing that there are many different types, and with children a good percentage are low grade ones often with an excellent prognosis. That’s not to say they aren’t serious, and horribly worrying, but even if you hear those words, the reality may well not be as bad as where your mind is taking you now.
Also, there are so many reasons that they can spot something on a scan that needs treatment. Some need prompt treatment, but will be quite simple.
Its actually reassuring that they haven’t asked you to return to the hospital tonight (with my daughter we were in surgery at a different hospital by the next morning).
My toddler daughter has a brain tumour. Hers was diagnosed within 20m of her scan. We had a long, and difficult stay in hospital, with complex brain surgery etc, and a high likelihood of further treatment, but its low grade and so its very likely that she’ll survive thankfully.
She’s currently snoozing next to me, and is doing great.
What I would suggest personally, is that you take overnight to get some of your ducks in a row. Its not like you’re likely to be sleeping well (though if you can get some, please do!), so you may as well use this period of time constructively.
Get a bag packed for you and your son. Make sure you have phone chargers etc. I’m assuming from your username, you have other children, and work out a continency plan for dealing with them.
Knowing that there is a plan in place will mean one less thing for you to worry about, and if (hopefully) the planning isn’t needed, then nothing is lost.
If its something that requires immediate treatment/surgery, then things may happen very quickly.
There are no medals for being strong in private – though putting on a brave face in front of your son is helpful. Do what you need to get through the stress of the next 24 hours.
PS: If you want to PM me, especially if its difficult news, please feel free to x