Lycylo,
Have you been taking hormone replacement therapies?
A hepatologist is definitely someone you will see who will most likely do an MRI scan to get a clearer picture. Once that is done, if that is not a misprint and it is actually 20-22cm then they should remove it or treat it with steroids to shrink its size.
Hepatic Hemangioma's are benign growths made up of blood vessels so biopsies are often avoided, but blood tests to test for cancer markers can determine if its nasty or not, in most cases they are not and can be shrunk or removed.
Keep on it, and if you are not satisfied, get another opinion and stress to them the impact this thing is having on your quality of life.
Hope it goes well for you :)
I don't think your getting this out of proportion,
It's your body and you just want to know the real deal. I bet the hepatologist won't think your blowing this out of proportion. Go see one ASAP ! One less thing.