Could someone please explain to me what the following means about a liver cancer patient?

[Kelvin K]

I have an 80 year old man whose FNA tests say that he has Adenocarcinoma, Malignant Epithelial cells whose features suggest glandular formation. An abdominal scan had sad said intraabdominal malignancy with hepatic metastases. He was given expensive medication such as Xeloda. His legs are very swollen, why?
I do not understand what all this means. Could someone please explain to me and tell me how long I should give him till death. The doctor said the site of origin is not known. How long can he live?what does all this medical vocabulary mean?please