22 G - 25 G SINS Trial for Pancreatic Masses

After patients have been screened and have signed informed consent, they will be taken to the endoscopy suite. Once the decision has been made to proceed with Fine Needle Aspiration (FNA), the subject will be randomized to 1 of 4 groups: * 22 gauge (G) needle with suction * 25 G needle with suction * 22 G needle without suction * 25 G needle without suction Follow-up Phone Call Phase: Unit staff will call patients 1 week after the procedure to check if patients had any adverse events from the procedure and this will be recorded onto the dataset.