Dealing with the truth regarding terminal cancer in a friend?!

It seems little can be done as he has stage II-B pancreatic cancer with one lymph node involvement. He is just 29 years of age, married for 2 years with no children yet. Though the family knew he has cancer, I could not tell them the severity of the disease as they are already very upset with the mom threatening to commit suicide if something happens to her only son and the wife of the boy on the verge of complete breakdown as she is also young and does not have that much maturity to meet the eventuality. Now, his condition is taking the toll on my confidence and posture too as I find it very difficult to swallow the fact and its implications. Though some websites have encouraging details that Whipple procedure can help save the boy, it still remains a complicated issue as the doctors here are tight-lipped and are waiting for the PET scan results before they say anything for sure. Doctors claim that they are suspicious regarding the origin of the cancer. They feel that since lymph node is involved, it is very much likely the cancer has metastasized from some other source than the pancreas itself and if it is so, then saving him is almost impossible. I am so much stressed that I need somebody to open up. Can anybody here give me a good suggestion as to how to handle this situation?