Individual Response to Hyperthermic Intraperitoneal Chemotherapy (HIPEC) Treatment of Peritoneal Carcinomatosis From Peritoneal Mesothelioma or Atypical Mesothelial Proliferation or From Ovarian, Colorectal, or Appendiceal Histologies

Background: Peritoneal carcinomatosis is uniformly fatal if untreated; improved outcomes are seen with aggressive cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC). The selection of chemotherapeutic agent for HIPEC is largely based on primary tumor histology and provider preference as opposed to knowledge of the potential efficacy of a specific agent for an individual patient. HIPEC is intended to target small or microscopic residual disease following complete cytoreduction; however, the actual efficacy and additional benefit of HIPEC is in question. Tissue response to simulated ex vivo HIPEC treatment in the SMART System or 3-D cell culture (organoid) models could inform chemotherapeutic agent selection for subsequent cytoreduction and intra-operative in vivo HIPEC treatments. Objective: To determine the correlation between ex vivo simulated HIPEC in the SMART System or 3-D cell culture (organoid) models, and in vivo HIPEC with respect to two measures of response to treatment: percent necrosis and Ki-67 Eligibility: Histologically confirmed peritoneal carcinomatosis from peritoneal mesothelioma or atypical mesothelial proliferation, or from appendiceal, colorectal, or ovarian, histologies Absence of extra-abdominal metastatic disease Participant deemed able to undergo optimal cytoreduction Age \>= 18 years of age Design: This is a Phase I study of cytoreductive surgery (CRS) and hyperthermic intraperitoneal chemotherapy (HIPEC), with randomization to one of two accepted HIPEC treatment regimens as determined by primary histology. At the time of cytoreduction, representative peritoneal tumor biopsies will be obtained before and after intra-operative in vivo HIPEC treatment. Tumor nodules harvested before intra-operative HIPEC will be placed in either the SMART System or 3-D cell culture (organoid) models, exposed to simulated ex vivo HIPEC treatment, and then perfused or maintained in culture, with subsequent assessment of percent necrosis and Ki-67. Tumor nodules harvested immediately after intra-operative HIPEC will be placed in the SMART System or 3-D cell culture (organoid) models and perfused or maintained in culture, with subsequent assessment of percent necrosis and Ki-67. The correlation of percent necrosis and Ki-67 assessment following simulated ex vivo HIPEC and intra-operative in vivo HIPEC will be determined.