Robotic Cytoreduction and Hyperthermic Intraperitoneal Chemotherapy for Treatment of Gastric Cancer With Limited Peritoneal Metastasis, ROBO-CHIP Study

Inclusion Criteria: * Restricted to 18 to 80 years of age * Eastern Cooperative Oncology Group (ECOG) performance status =\< 2 * Histologic confirmation of gastric adenocarcinoma including all subtypes and Siewert type II/III gastroesophageal (GE) junction adenocarcinomas * Absolute neutrophil count \>= 1,500 / uL * Platelets \>= 50,000 / Ul * Serum creatinine \<= 1.5 mg / dL * Adequate nutritional status (Albumin \>= 3.5) * Metastasis confined to the peritoneum: * Positive peritoneal cytology * Peritoneal metastasis on diagnostic laparoscopy * Peritoneal metastasis on imaging * Response to systemic chemotherapy defined as at least one of the following: * Reduction (\>= 30%) in standardized uptake value (SUV) max \[Response Evaluation Criteria in Solid Tumors (RECIST) criteria\] * Reduction in size of primary tumor, regional lymph node or peritoneal metastasis on imaging (\>= 20% decrease in the longest diameter of target lesion) RECIST criteria * Reduction ( \>= 30%) in Peritoneal Carcinomatosis Index (PCI) or conversion of peritoneal cytology * Reduction ( \>= 30%) in serum tumor markers CEA or CA 19-9 * Peritoneal Carcinomatosis Index (PCI) =\< 7 and surgeon deems high likelihood for a complete cytoreduction * Body Mass Index (BMI) =\< 35 kg/m\^2 Exclusion Criteria: * Distant metastatic disease not limited to peritoneum, such as solid organ metastases (liver, lung, bone, distant lymph node, etc) * Malignant ascites at time of study enrollment * Comorbidi…