How Much Future Liver Resting Liver Is Needed?

Solitary mass without major vascular invasion and adequate liver function. You have to evaluate these patients for, you know, do they have underlying cirrhosis that's complicating this? And then how much of the liver would you have to take out and how much function would they have once that liver is taken out? Same as possible, but controversial for limited major vascular invasion or multifocal disease that is resectable.