@optimist1591 , I can't say much about the protocols specifically, but if you are considered a HRI (High-Risk Individual) there's usually a separate category in the flow chart.

Most of the HRI assessments include genetic testing for inherited mutations and discovery of close blood relatives with cancer history. Since you've already had two types of cancer, I suspect you'd fall into a higher-risk category that justifies more frequent testing.

Sometimes they interweave different types of tests (EUS, MRI/MRCP, PET) in shorter intervals to get different views and check for rapid changes, then back off to less frequent monitoring if all appears stable.

But with your history, I would err on the side of caution... Seek out a second opinion, second imaging appointment, and start getting fairly regular blood tests for CA19-9 and CEA to get a baseline of those. They're not gold-standard indicators on their own, but it's easier to know if they're increasing when you have a healthy reference to compare them to. Get a germline (hereditary) genetic test like Invitae if you haven't already.