In October 2011, Steve Jobs, the president of Apple, died after a long illness, people began to pay attention to pancreatic tumors ………. In October 2003, Steve Jobs found a shadow on his pancreas during a physical examination. At that time, the mass was large enough to be detected by CT examination, so it was at least a 2 cm tumor. Doctors guessed that the shadowed portion of the pancreas was at least 1 cm in diameter at that time, which contained 1 billion cells and had been growing for at least 10 years. Usually, death comes when a single tumor grows to 10 cm in diameter. The pancreatic neuroendocrine tumor that Steve Jobs had fit this pattern of development. Steve? The history of Steve Jobs’ pancreatic cancer progression can be determined by mathematical calculations. He received his diagnosis at the age of 48 to his death at the age of 56, a period of about 8 years. From these dates, it can be extrapolated that Jobs’ pancreatic tumor doubled in size every 10 months. Typically, solid tumors in many organs double in size every 3 to 9 months, so Jobs’ tumor was not growing very fast. Once this enlargement cycle is obtained, the time when Jobs’ cancer started can be calculated. His cancer started at a young age, probably 24 years old. A similar calculation shows that his cancer had progressed from the pancreas to the liver (and other parts of his body) more than 20 years before he had surgery in late July 2004. The cancer had been present for at least 10 years prior to the surgery in late July 2004, and the evidence showed up in the surgery. “Unfortunately, the cancer had spread. During the surgery, doctors found three secondary liver cancer tumors.” The doctors could all see the tumors on the surface of the liver with the naked eye, indicating that each cancerous tumor reached at least 1 cm in diameter. Doctors explained that these metastases began more than 20 years ago, when Jobs was in his 20s. Finding tumors on the liver means that the cancer had spread to other organs of the body years ago. Therefore, I would like to tell you that the development of tumor is a long-term process and should be classified as a “chronic disease”, just like diabetes and hypertension, etc. We should not be afraid of talking about cancer, nor should we be “negative and unnecessary”. “Instead, we should develop healthy and good living habits and have annual cancer checkups. Take care of your own body.