Can i give my grandma half of my liver if she has liver cancer?

Very generous idea: But first need to unravel the 'appropriateness' of gram as a transplant recpinet with her tumor, then your histocompatibility (match) for transplant. Once anathema, primary liver cancers now get a close look about compatibity for transplant, .

Complicated: There are a long list of criteria. What you are suggesting is called "living donor" liver transplantation. First, this is only done for patients with small, isolated liver cancer tumors. Second, this operation is only done in select university hospitals in the us. Finally, prospective donors must be tested to make sure theya re a match, and that all involved patients are healthy enough.