Comparison between 
ADVERSE REACTIONS, MALIGNANCIES, COMPLICATIONS
The procedure success rates were both 100% with no adverse reactions or complications in the two groups. Compared with the final diagnosis, the accuracy, sensitivity, specificity, PPV, and NPV were respectively 93.8%, 90.9%, 100%, 100%, and 83.3% for CH‐EUS MASTER‐guided EUS‐FNA and 91.3%, 85.7%, 100%, 100%, and 81.8% for the control group. Though it seems diagnostic yield was higher in CH‐EUS MASTER group, there was no significant difference between the two groups (Technical characteristics and outcomes for CH‐EUS MASTER group and control group of EUS‐FNAAnalyzed 22 patients finally diagnosed with malignancies.