If you are in your 50s and have a sudden high blood sugar and mild left abdominal pain, you need to rule out pancreatic cancer. This is because cancer can cause insulin dysfunction and a sudden increase in blood sugar. What are the conditions that need attention in this age group? 1. Sudden rise in blood glucose to a very high level, which is difficult to control with medication, and insulin resistance is formed very quickly; 2. New onset diabetic patients found within the last year, and the blood glucose level is very high and not easy to control stably; 3. Family history, parents, siblings and other people who do not have diabetes, suddenly appear blood sugar is not easy to control; 5. If these conditions occur, it is necessary to rule out pancreatic cancer first, and to do further enzymatic examination, insulin release test, glucose tolerance test, ultrasound and enhanced CT or magnetic resonance examination.