Pancreatic necrosis is caused by a problem with the blood supply to the pancreas, which is necrotic. This is a pathological change, but it can manifest as severe pancreatitis. It can present as a very severe pancreatitis. It can also present as no symptoms, just a mass in the pancreas. So sometimes what appears as a mass is actually necrosis of the pancreas. Necrosis of the pancreas is the necrosis of the pancreatic tissue after ischemia, but some people may show it obviously, while others may not show it at all, which is a pathological concept. This is a pathological concept. However, in clinical practice, the manifestation may be different for each person, and most of them will be treated according to the location and impact. If the patient does not feel anything, no special treatment is needed, but if the patient has pancreatitis, it should be treated as pancreatitis. Most pancreatic necrosis manifests as a mass in the pancreas, which needs to be differentiated from pancreatic tumors, with or without tumors. It is necessary to go to the hospital for careful examination to exclude tumors. At present, there are many tests available in the hospital, from ultrasound, CT, etc., to see if there is blood supply in the mass and to determine whether it is pancreatic necrosis or a tumor. However, there are some small ones that need to be examined carefully by a pancreatic specialist.