Exclusion criteria
cystic pancreatic tumors
ADVERSE EVENT, DISORDERS
(1) Patients unable to withstand anesthesia or CH‐EUS (EUS‐FNA) examinations; (2) Patients diagnosed with cystic pancreatic tumors or mental disorders as well as those who underwent prior surgical treatment with curative intent or chemoradiotherapy; (3) Adverse events occurring during the trial that affected the observation of efficacy.