Has anyone had cancer on their hepatic/celiac arteries? What treatment

First of all I want to immensely thank markymarkfl & jk77 for responding to a message that was actually a response to someone else's post about 1 month ago. Thank you, thank you!
My antigen jumped to 23 from 6, and then 29, 73, 47, and finally 223 before my oncologist contacted me. She first had her nurse practitioner return my worried phone calls when my CA19-9 started to almost quadruple. I was literally belittled and talked to like I was some scared little child. It was markymarkfl and jk77 who sent me a response saying something like "I don't think it works like that" when I initially believed that there was nothing to be concerned about because my antigen was still below the upper limit of "normal" or 34 or 37. I asked for a 2nd opinion from Hoag Medical Group 2x (UCLA and Cedar Sinai) and was turned down 2x letting me know I could go to my current oncologist's partner. I told them I wanted to see an oncologist from a center of excellence, but they just said they admired how empowered I was, but still denied. Markymarkfl said his tumor (he had also been a stage 2 originally) was seen on MRI, so I just asked my dr for one and had one where there saw suspicious mark on my liver. I also just got an endoscopy and why she never ordered this for my hepatic/celiac artery area that lit up on the CT but each radiologist that had been reading them since April of this year kept saying "it's probably scar tissue". Turns out it was cancer all along. I questioned my surgeon and oncologist so many times about this area because at one point the CT showed that it grew nearly 1 centimeter and radiologist response was it was probably positioning of me - really???? Ridiculous I told the technician that did my next CT as those beds are so narrow, there's no room to move. So now, it seems I was never a stage2, was I always a stage3 since the hepatic artery is next to the pancreas? I changed my medical insurance to a ppo so that I could go to UCLA or Cedar Sinai in January. I'm getting weaker all the time and I have high blood pressure any arrhythmia once again. Life sucks putting your care in the hands of some of these doctors.