Both times I had a biopsy and a pathology report before any more significant treatment.

First round (~2007) I did "conservative" surgery which included two teeth and a big chunk of jawbone + autologous bone transplant + dental implants, which got me though to 2023 - this time I've pushed hard to pursue chemotherapy because my ameloblastoma has a the BRAF V600E mutation - and there is a recently FDA approved oral (pills) chemotherapy for other cancers with that specific mutation.