P-206 Endoscopic prediction of depth of tumor invasion in early gastric cancer in the upper third of the stomach

The endoscopic features of early gastric cancer(EGC) arising from the upper third stomach(upper body, fundus, and cardia) hasnot been well studied. If EGC inthe stomach can be predicted to have invaded mucosal(M) or submucosal(SM) layer, surgical treatment determined. This study evaluated in as asrisk factors for SM invasion. We retrospectively reviewed patients' medical records a single tertiary hospital (Daejeon) investigated findings clinical data. Patients with who underwent surgery resection between January 2016 April 2022 were included. Logistic regression was used determine risk cancer group. In total, 173 patients enrolled this study: 94 79 M cancer. Risk invasion determined by univariate logistic clubbing converging folds (OR 6.279, p=0.000), fusion 9.179, P=0.000), irregular nodule central lesion 2.336, p=0.016), margin elevation 2.520, P=0.031), ulceration (ORs 9.686, p=0.000). However, multivariate analysis, only identified factor 6.598, p=0.007). occurring stomach, is Surgical should considered if characteristic present.