Abstract
BACKGROUND: Multimodality therapy incorporating a combination of cytoreductive surgery (CRS), intraperitoneal (IP) and systemic therapy continues to evolve for peritoneal carcinomatosis (PC) However, treatment and outcomes vary depending on tumor of origin. AIMS: To develop Appropriate Use Criteria (AUC) guidelines to facilitate treatment decision-making for patients with PC based on available evidence. MATERIALS AND METHODS: The American Radium Society (ARS) multidisciplinary expert panel performed a comprehensive systematic review. Preferred Reporting Items for Systematic Reviews and Meta-analyses (PRISMA) methodology was used. These studies were used to inform the expert panel, which then rated the appropriateness of various treatments in seven representative clinical scenarios through a well-established modified Delphi consensus methodology. RESULTS: Treatment of PC is often treated with a combination of CRS and IP ± systemic chemotherapy but specific recommendations exist for different tumor types and outcomes vary. DISCUSSION: Treatment of PC is complex and varies depending on origin of primary tumor and extent of disease. These AUC assist in patient and treatment selection for different clinical scenarios. CONCLUSION: A summary of recommendations is outlined to guide practitioners on the management of PC from different tumor origins.