Construction of Molecular Diagnostic Marker Model for Pancreatic Cystic Tumors Based on Pancreatic Cystic Fluid Samples

Inclusion Criteria: * Subjects are ≥ 18 years old, regardless of gender; * Preoperative imaging examination (EUS, CT, MRI) diagnosed cystic mass of pancreas and suspected cystic tumor; * Subjects voluntarily accepted radical resection of pancreatic cystic tumors; * Subjects or family members voluntarily sign the informed consent form for clinical research. Exclusion Criteria: * The excised sample does not contain cystic components, or the cystic fluid cannot be collected; * Receive tumor-related treatment (radiotherapy, chemotherapy, immunotherapy, etc.) before operation; * Receive antibiotic treatment within 1 week before operation; * Subjects refused to accept radical resection of pancreatic cystic tumor, or had any situation that they could not accept radical resection of pancreatic cystic tumor; * The subjects or their families refused to sign the informed consent form for clinical research.