The Treatment of Bioartificial Liver With hiHep Cells After Extensive Hepatectomy

This trial is testing a bioartificial liver support device — using specially grown human liver cells — to help patients recover after major liver removal surgery where a large portion of the liver is taken out. **You may be eligible if...** - You have liver cancer, liver stones, or a benign liver tumor requiring surgery - Your liver function is reasonably good (Child-Pugh class A or B) - Your heart and lungs are healthy enough for surgery - Your remaining liver after surgery is expected to be less than 50% of normal size **You may NOT be eligible if...** - You have severe brain swelling or signs of bleeding in the brain - You have a serious blood clotting disorder or active bleeding - You have HIV, hepatitis D, or hepatitis C - You have kidney failure related to your liver disease - You have an autoimmune liver disease, fatty liver disease, or certain inherited liver conditions - You are pregnant - You have used drugs in the past year - You have a severe allergy to plasma, heparin, or protamine Talk to your doctor to see if this trial is right for you.