One thing to keep in mind so that you don't go through unnecessary increased amounts of radiation - calcification or bone matrix laydown takes 6 weeks to show up on xray. Yes, CT scans can show this much sooner but it is at a high risk because of the amount of radiation exposure. If this doctor was just monitoring the formation of the calcification then and xray with much less radiation & cost would do just fine - if there was evidence of a lot more calcified deposits then and only then, should they be using a CT scan to further evaluate. CRPS/RSD by itself increases the risk of carcinoma so keeping your other risks/exposure down as much as possible is much more beneficial in the long run.

Sounds like you are doing the right thing in seeking a specialist who will be much more apt to identify and treat the cause if needed.

I don't know your age but, I am 45 and also have this type of calcification in my abdomen and pelvis - for me it was an incidental finding but not unusual due to another medical issue as previously mentioned. They are monitoring it yearly unless new associated symptoms appear that give rise to earlier checkups. I am on Vitamin K and Celebrex which helps reduce new formation and treats other problems as well.

Hoping you find the right doctor and you have answers soon,
Tessa