Tumor in the epigastrium pressing against the left lobe of the liver

I’m reaching out to this community because I am desperately looking for some kind of hope right now. I just found out today that my dad has been diagnosed with an epigastric tumor pressing against the left lobe of his liver, and it’s massive—over 100mm. He’s 60 years old, and lately, he’s been dealing with intense pain in his shoulder and arm, waking up drenched in sweat, and struggling to catch his breath constantly.
He’s scheduled for more testing in a few days, but the situation is infuriating because since the doctors are currently on strike, nobody wants to give us any actual information or clarity.
I’m living in Switzerland right now, so I feel completely helpless being this far away, unable to do anything except sit here and pray for some kind of insight from you all to help me get through these next few days while we wait for some mercy from the American medical system and for the results to come in.(

Any bit of information would be a lifeline, because honestly, I can't find anything useful online, or maybe I'm just looking in all the wrong places.

Thank you so much.

Well, just bring him over to you in Switzerland then. They don't really deal with strikes there. I'm guessing that's where you're working, right?

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Look, I’ll step up and get it done if it really comes down to it, but my main concern right now is actually getting some clear answers about what kind of tumor we're even dealing with here.😢(