RecruitingPhase 2ProcedurePHASE II EVALUATION OF CYTOREDUCTION SURGERY AND HYPERTHERMIC INTRAPERITONEAL CHEMOTHERAPY (CRS/HIPEC) IN GASTRIC CANCERThis is a Phase II treatment study analyzing the role of preoperative chemotherapy, preoperative laparoscopic HIPEC, and gastrectomy with CRS/HIPEC in gastric adenocarcinoma patients with cytology-positive only carcinomatosis, radiologically-occult carcinomatosis, or radiology apparent peritoneal-surface only metastatic disease.