Vadim Gushchin, MD, Brian Badgwell, MD, and Jeremy Davis, MD discuss the role and timing of preoperative treatments before cytoreduction and HIPEC for gastric cancer. The panelists offer useful tips on surgical management of gastric cancer patients with peritoneal carcinomatoses, such as how to decide on the extent of the surgery, whether patients with CDH1 mutation should be treated differently, and others.