Sa1628 Oral vs Intravenous Proton Pump Inhibitors for Peptic Ulcer Bleeding, a Preliminary Report

third of the stomach (70%, p 0.01) and in differentiated adenocarcinoma with massive submucosal invasion (56.5%, p 0.0001). On the whole, we tended to under-stage by EUS more frequently than over-stage (11% vs. 3%). Type 0-I lesion tended to be over-staged (12%, p 0.05) and the upper third lesions tended to be under-staged (23%, p 0.03). Conclusions: EUS is useful for evaluation of the depth of gastric cancer invasion which determines the feasibility of endoscopic treatment. However, it is noteworthy that the diagnostic accuracy of the invasion depth diminished for the lesions in the upper third of the stomach.