In this randomized trial, the 22G standard fine needle aspiration needle was compared with the newly developed 22G ProCore needle for sampling pancreatic mass lesions during endoscopic ultrasound. Patients were randomized into the two needle groups and then various outcomes were compared between the two needle types, including the number of passes needed to establish a diagnosis, the ability to procure enough tissue sample to be able to make a diagnosis, the rates of needle failure and complication rates.
