It sounds like this is a good diagnosis. "Unremarkable" would mean that there is nothing the doctor is seeing that would be a cause of concern. And the smooth contour points to a healthy liver, having no incidence of scarring, which can be seen as more of a rough contour on a diagnostic imaging test. If you're still concerned, I would definitely call the doctor or nurse line and I'm sure they'd be happy to discuss what it means, but it sounds like things are looking good :-)