Mom's official diagnosis is "Advanced Pancreatic Cancer" which has Metastasized (spread) into her Lungs and to this point, into her right kidney and ureter. The prognosis of this type of cancer at this stage is less than desirable, and the paramount concern is for Mom's comfort and quality of life.
General Information on Pancreatic Cancer can be found here:
http://www.cancer.gov/cancertopics/types/pancreatic
After 2 waves of chemotherapy, the blood indicators ("tumor markers") have not shown a positive response to the chemical treatment. In the doctors words "there is not enough change in the markers to consider the treatment effective." This news comes as a bit of a sad validation in Mom's choice to terminate chemotherapy.