Have had chronic headaches for years and taken Tylenol a lot. Doc saw something on my liver thru a CAT scan. Now he wants me to have a sonogram. He says he is looking for liver lesions. What are my chances here. I'm 65, still work, a little overweight, very fair skin (always have been), woman, take estrogen for menopause treatment (have for 10 years), had a partial gastrectomy cause of stomach ulcers cause by ibuprofen so I switched to Tylenol. I did have bleeding stomach ulcers at one time and always get endoscopy's and colonoscopies but so far so good.