What Causes Protruding Lump Under The Breast?

I am mrs.felix, aged 47. My uterus and overies are removed around 12yrs back. so far i was good in health except leg pain.But i noticed after some years a small line like thing protruding under my left breast,just on the last rib.it was there as it is.but suddenly i noticed it growing.before 6yrs i had a scan report saying that infiltration of fatty liver. now that i can see it is growing, now the present size is like a half cut bun.no pain, its not hard.i can press it slowly. i have severe indigestion problem when i take a masala items and spicy food. and i cannot eat fully. now i myself stopped all kinds of food and i take only oats , broken wheat porridge and all vegetables and fruits. i am afraid. pls give me an answer.