The first-line cancer of the pancreas that the title asks about should refer to pancreatic cancer, and the location of pancreatic cancer is also the location of the pancreas, which is the location of the pancreas, connecting the two lower edges of the rib arches in a line, and at the left of the center is the stomach, and the back of the stomach, near the spine, is the location of the pancreas. The pancreas is deeper and not usually felt in the abdomen, think of it as a flat, long, pocket-like organ about fifteen centimeters long. It is important to note that there is an opening in the wall of the duodenum where it meets the common bile duct, the jugular abdomen, where bile and pancreatic juice drain into the intestines, and that this long, pocket-like organ can grow from the head of the pancreas to the middle of the pancreas to the tail of the pancreas. If the cancer grows in the head of the pancreas, the mouth of the pocket will be blocked, and the digestive juices cannot be drained out, which may cause jaundice. If the cancer grows in the tail of the pancreas, it tends to stimulate the retroperitoneal plexus, and because of its deep location, it will cause severe pain in the back of the pancreas, and it will be necessary to do a CT scan to clarify whether there is any cancer or not, and in which position it is located.