Pancreatic tumors are one of the common malignant tumors of the digestive tract and are the most common of the malignant tumors, mostly occurring in the head of the pancreas. There can be pancreatic sarcoma, pancreatic cystadenoma, pancreatic cystic adenocarcinoma and so on. So, what are the symptoms and manifestations of pancreatic tumor? The following are the symptoms and manifestations of pancreatic tumors. I. Pancreatic cystic adenocarcinoma The main symptoms of pancreatic cystic adenocarcinoma are hidden pain in the upper and middle abdomen or low back pain, and upper abdominal mass. Other symptoms may include loss of appetite, nausea, indigestion, weight loss, jaundice, etc. A few patients may have gastrointestinal bleeding. The abdominal mass is usually not painful to touch and may be cystic or hard and solid. When secondary intracapsular hemorrhage occurs, the abdominal mass may suddenly increase in size, and the abdominal pain may intensify with obvious tenderness. When the tumor infiltrates or compresses the common bile duct, jaundice may appear. Abdominal pain is an early symptom of pancreatic cystic adenoma, which can be vague pain, distension or stuffy discomfort. In addition to abdominal pain, it may be accompanied by loss of appetite, nausea, vomiting, indigestion and weight loss. 2, abdominal masses abdominal masses are the main signs. Most of the masses are located in the middle of the upper abdomen or left upper abdomen, small ones can only be palpated, large ones can occupy the whole abdominal cavity, round or oval, tough, huge masses have a cystic feeling when touched, no tenderness. In a few cystic tumors located in the head of the pancreas, jaundice occurs due to the compression of the common bile duct by the cyst. When the tumor presses the splenic vein or invades the splenic vein, it may cause embolism, which is manifested as enlargement of the spleen and may cause varices in the fundus and lower esophagus, and even vomiting of blood. Pancreatic sarcoma can be asymptomatic when the tumor is small in the early stage. Occasionally, occupying lesions of the pancreas are found during ultrasound or CT examination. Most pancreatic sarcomas are already large when they are detected. Patients may have vague pain and discomfort in the upper abdomen, and low back pain when the lesion compresses or invades the abdominal plexus. Patients may present with nausea, vomiting, and in the late stage, hypothermia and weight loss.