If you look at the FNH/adenoma/haemangioma thread you will find lots of people who have gone through similar. We all have experienced different treatments- it's interesting that you have a hiatus hernia and possible reflux. I too was admitted for chest pains in 2008, and the CT scan that they performed in the first instance got a picture of my liver too- I have been diagnosed with hiatus hernia, oesophagitis, helicobacter pylori (which has been treated) and a 5cm focal nodular hyperplasia in R Lobe of liver. My theory is that the nodule/growth in liver expands in the chest/upper abdominal cavity and pushes other organs out of line- hence hiatus hernia, which causes the other gastric symptoms- consultant hepatologist doesn't agree
I have had no surgery as they are fairly sure its an FNH - for adenoma the treatment tends to be different and surgery is usually performed because adenoma can change from benign to malignant. You don't mention whether you have been on the birth pill? there is strong evidence to show that growth of adenoma is linked to birth pill use- funny how they don't tell you that when you're prescribed it. There is at least one person on this site who stopped taking oral contraception and her adenomas completely disappeared.
Hope that helps