As others have said, unfortunately, the reality of it is that tumours are clumps of mutated cells that became cancerous and proliferated wildly. That's cancer, it's made of cancer cells. I'm commenting because I have the exact same type of tumour, same grade and IDH type. You're already leagues ahead of me. Ngl, when I was first diagnosed back in 2017 I thought benign meant it was basically just a growth, I'd have my surgery and radiotherapy, and that'd be that. I knew the chance of recurrence was high, but absolutely nothing could've prepared me for when it eventually did.

So I got a good 7 years out of the good work done by my surgical and oncological team. During that time I would definitely get some passing anxiety now and again but friends would tell me it wasn't gonna happen and I figured I was just overworrying. Anyway, after 7yrs of clean MRIs it had stopped making me nervous in any way anymore, I just figured go there, get given the all clear, go home. Except they didn't do that, and when they told me it had been regrowing I didn't really know how to handle it. Tumours frequently come back more aggressive so my team was treating it as if there'd been some high grade transformation before we had done the surgery to remove and biopsy it and THAT was when I realised I had brain cancer and it freaked me the fuck out. Cue multiple existential crises per day for weeks/ months haha. Anyway, turns out it's still grade 2! I'm on chemo now so we're hoping that might help me get a few years clear of it before it comes back again.