Abstract
Endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) has been developed mainly in Western countries since the mid 1990's, and it has recently also become popular in Japan. This technique is the safest and easiest way of obtaining pathological samples of the pancreas. Of the many doctors who have evaluated the usefulness of this technique, some did not find it satisfactory because they obtained insufficient results for the diagnosis. In order to improve the diagnostic ability, it is important to adequately understand the procedure well and modify the technique depending on each case and institution.
