This document summarizes a study analyzing factors that influence obtaining an adequate tissue sample when performing endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) to diagnose pancreatic cancer. The study reviewed 188 pancreatic cancer patients over 6 years. It analyzed how needle size, location of the mass, size of the tumor, and endosonographer's experience affected the average number of FNA passes needed to obtain an adequate sample. The results showed endosonographer's experience and location of the tumor most influenced the number of passes, while larger tumors generally required fewer passes.