Hi and welcome to HCM.
The most common liver disorders is fatty liver
which can be found in healthy people, but usually is resulting from elevated blood lipids
and elevated blood sugar. If ultrasounds didnt find anything and viral markers are negative then you have no reason to be concerned. YOu should treat it by changing dietary and lifestyle habits. Do exercise, avoid alcohol, smoking
, fats, fast food and carbonated drinks. Eat more fruit and vegetables, boiled meat and follow some of hepatoprotective diets. Findings usually improves on such measures. If not, then some medicines can be prescribed, but I suggest to go step by step. bruises may be related with liver damage
but only if this is severe,othe possible causes are some hematologic and clotting disorders so you need to do certain blood tests to verify this.
Wish you good health.