Hi,
If helpful at least sometimes They just watch things of that smaller size (or would need an angio they might not do) (since they would watch it either way )to confirm what it is between the two. However talk to your doctor of course for specifics. But take a deep breath as they may not know/tell you specifics unless they do more testing. Hang in there. The vs. typically means they can’t confirm what it is between the two. I understand this can be frustrating. The small size is a good thing.