Trev, just for my information, how much does a stone translate to in pounds?
A CT with contrast is more accurate than one without it. I always get contrast for my abdominal CTs and MRIs (tracking a tumor's growth.)
15 mm is about an inch...so not huge. I had a cancerous tumor in July that was 4.9 cm...quite large--which was shrunk with targeted chemo. (I'm awaiting transplant.) Also, regarding your question about a cyst disappearing: If it's a liquid cyst, it can burst and be absorbed by the body; i.e., disappearing. I had this happen in my 20s. I was in terrible pain in my left lower quadrant. Went to the ER and was told I had an ovarian cyst the size of a grapefruit. They gave me codeine and when I returned the next day, they didn't see anything. It had burst. And it never returned.
An ALT of 70-80 is not terribly high. When your liver enzymes are triple high normal, there's cause for serious concern. Obviously, when liver enzymes increase to beyond the normal range, something is going on. With you, it's probably your fatty liver.
Try not to worry--a cyst isn't serious unless it turns out to be cancerous...only seen in a solid cyst. Do, however, continue to question your doctor about things you don't understand or questions you may have.
Hugs,
Connie