65 yrs old, just diagnosed w 4.0 Thoracic Aorta Ane

My Aneurysm was randomly found on my Calcium Score Test I had on 5/14/26. The issue was my PCP called me on 5/15/26 and told me my Calcium score was a 0 so everything was fine until I received a call from her on 6/29/26 that she failed to tell me they found an Aneurysm. After doing some research I told her I wanted to see the Cardiothoracic surgeon who did my husband’s open heart surgery which she failed to do and referred me to a clinic 2 hours away when the doctor I wanted to see was 10 minutes away so I called and made the appointment with the surgeon myself. He ordered an Echocardiogram and a CTA on 7/7/26 and I saw him the next day, 7/8/26. Now, we get test results in a app that we can look at before we speak to any doctor. The results of the CTA scan said ‘no aneurysm seen’ so I was assuming he would say the same but I was wrong. He said the scan DID show the 4.0 aneurysm and I need to be checked again in 6 months. I than got a message from my PCP saying congratulations, there was no aneurysm seen! At this point I don’t know who or what to believe, if the Echocardiogram and CTA didn’t show anything but the surgeon did see something who do I believe or trust!?!? I’m looking into getting a second opinion but I need to pay off the previous tests first. My question is, can a CTA and Echo be so wrong because if they can and I were to believe my PCP I would believe I didn’t have an aneurysm.