My mom's biopsy is back, and the news isn't good. She has breast cancer. We're heading off to the oncologist this afternoon for a confab, but the outcome really isn't in any doubt. Her health isn't such that she can stand a long surgery or chemotherapy.
My Dad and I have discussed the situation, and we both think that the best we can do for her is to keep her comfortable in the time she has left. With her compromised mental state, pain would be a torture, since she doesn't understand why she hurts.
This sucks, and there's nothing to be done about it except deal with it.