Actually, my mother had a huge cyst removed from her liver. I forget how it was detected, it didn't show up in x-rays. Ultrasound, maybe. It wasn't 47 pounds (the cyst, she got to keep *most* of her liver), but the doctor said it was bigger than he thought, and when they opened her up, the thing burst. That was 15 years ago. She's fine now, except for some rib/muscle pains occasionally. Interestingly, there's a pale circle on her cheek, and I wonder if this relates to the lobe of the liver that was cut out.