This is a prospective randomized controlled trial which will recruit patients referred for suspicion of pancreatic mass and indication of EUS-FNA as part of standard of care in the Interventional Endoscopy Unit at the University Of Chicago Medical Center. Basic demographic data will be recorded for each patient. If a pancreatic mass is confirmed in EUS evaluation the patient will be randomized in a 1:1 ratio to either Control group (Single needle) or Investigational group (Multiple Needle). There will be an expert cytopathologist in the exploration room (blinded to the group assignment). Samples obtained through FNA will be prepared onsite either for cytological evaluation by the cytopathologist: each fine needle sample will be expressed by using a 10mL air-filled syringe onto a separate glass slide, and a direct smear will be made by an on-site cytopathologist. Each slide will be air-dried and/or alcohol fixed (95% ethanol), and direct smears will be prepared for immediate interpretation by staining with Diff-quick staining system.