Small lymph nodes around the pancreas are usually caused by pancreatitis, pancreatic tumors, and reactive hyperplastic lymph nodes. 1. Pancreatitis: Pancreatitis may lead to the appearance of small lymph nodes around the pancreas, resulting in symptoms such as enlargement and pain in the lymph node cluster. 2. Pancreatic tumor: when there is a malignant tumor in the pancreas, it will cause lymphatic metastasis, resulting in small lymph nodes around the pancreas of the patient, which will cause fever, anemia and other symptoms. 3. Reactive hyperplastic lymph nodes: reactive hyperplastic lymph nodes are mainly caused by injury and tissue cell reaction hyperplasia, which will result in small lymph nodes around the pancreas, and the patient will have pain, fever, chest tightness and other symptoms. In addition, the presence of small lymph nodes around the pancreas may also be caused by inflammation and tumor lymphatic metastasis in nearby organs, such as the stomach, small intestine, liver and gallbladder. Therefore, if you find small lymph nodes around the pancreas, you should have a complete examination, make a clear diagnosis, and then take appropriate treatment in time.