[O034] 膵　EUS-FNA1

[O034-2] Comparison study of 19 gauge and 22 gauge needle of EUS-guided fiducial marker placement using porcine model

^○Makoto Nishimura¹, Yasutoshi Ochiai², Naohisa Yahagi² (1.Dept. of Gastrointestinal Endosdocopy, Tokyo Geriatric Hospital , Japan, 2.Division of Research and Development for Minimally Invasive Treatment, Cancer Center, Keio University School of Medicine)