Welcome and sorry you had to find us. I would suggest sticking with opinions from major cancer centers, as they have the experience with CC others don’t have. There’s only about 2000 cases annually diagnosed in the US, so smaller hospitals and medical centers see cc only rarely. Cleveland Clinic is certainly among the ones I would consider. I’m personally not familiar with TrueBeam STx radiation therapy, but that doesn’t mean much. I was treated at Columbia Presbyterian in NYC (nowhere near where I live) because of their reputation. Has your husband had an ERCP (special endoscopy) done yet? If not, I would expect Cleveland Clinic will want to do one.
Try to stay positive and focused on coming up with a treatment plan and always be prepared to get additional opinions if your not comfortable.
Good luck!