I have yet to read a case of a fatty liver condition in a fit person. Normally, this afflicts overweights, diabetics and those who drink alcohol regularly.
Best thing to do is lose weight, exercise and change one's lifestlye. Drink more pure and fresh fruit juices, low carb and non-starchy veggies and avoid fatty foods and dairy. I posted this home remedy that worked for my mom's friend (my mom as just diagnosed yesterday of having a fatty liver too, hence my researching frenzy) just a few minutes ago on a different thread. Let me repost:
drink pure and freshly squeezed lemon juice every single day. My mom's friend adds maple syrup to it to make it more edible. Also, one must consume about 2 gallons of water each day. Back to the basic and healthy living. :)
btw, mind sharing how big the disparity is of a normal liver to that of yours? My mom was told normal size should be around 10 to 35, hers is 109. :(
good luck!