Definition:
stage IV pancreatic cancer (... PAN-kree-A-tik KAN-ser)
The tumor is any size and cancer has spread to other parts of the body, such as the liver, lung, or peritoneal cavity (the body cavity that contains most of the organs in the abdomen).
Enlarge Stage IV pancreatic cancer; drawing shows other parts of the body where pancreatic cancer may spread, including the lung, liver, and peritoneal cavity. An inset shows cancer cells spreading from the pancreas, through the blood and lymph system, to another part of the body where metastatic cancer has formed.

Stage IV pancreatic cancer. The tumor is any size and cancer has spread to other parts of the body, such as the lung, liver, or peritoneal cavity (the body cavity that contains most of the organs in the abdomen).