P-203 Pathological evaluation of the therapeutic effect of argon plasma coagulation in gastric low grade dysplasia

Gastric dysplasia, a precancerous lesion of the stomach, is primarily treated with endoscopic resection. Although argon plasma coagulation (APC) used as an alternative treatment for older patients or those bleeding tendency, studies have reported higher rate local recurrence after APC than This study aimed to investigate incidence and associated causative factors residual dysplasia through pathological examinations. prospective was conducted between March 2021 February 2022 in diagnosed low-grade gastric at tertiary medical center Daejeon, South Korea. performed saline injection into base lesions. Follow-up biopsy ablation site 24 h 3 months APC. Residual lesions were found 13 68 (19.1%) 24-h follow-up endoscopy biopsy. The Ki-67 index, marker cellular proliferation, significantly presence (p=0.00, chi-square test). 3-month positive index. Only had months. No postprocedural complications observed. In some patients, remnant may persist even APC, which cause recurrence. reaction tissues persists >24