How long does sister have with a stage 4 pancreatic cancer.?

Pancreatic cancer is a serious and aggressive disease, and the prognosis for patients with stage 4 pancreatic cancer is generally poor. The average life expectancy for patients with stage 4 pancreatic cancer is typically 6 to 12 months, but some patients may live longer with treatment. The exact prognosis depends on a number of factors, including the patient's age, overall health, and response to treatment.