This document summarizes a presentation on adjuvant chemo-radiotherapy for gastric cancer. It discusses key facts about gastric cancer incidence and survival rates. It reviews clinical trials like Intergroup 0116 and ARTIST that showed improved survival with adjuvant chemoradiotherapy for patients with positive lymph nodes or incomplete nodal dissection. The presentation concludes that multimodal treatment including surgery and adjuvant therapy is superior to single modality treatment, and that radiation therapy may improve outcomes for patients with intestinal-type cancer and positive lymph nodes.