This issue of Surgical Oncology Clinics of North America, guest edited by Dr. Edward A. Levine, is devoted to Treatment of Peritoneal Metastasis.� Dr. Levine has assembled expert authors to review the following topics: History of cytoreductive surgery and hyperthermic intraperitoneal chemotherapy; Imaging for peritoneal metastases; Patient selection for cytoreductive surgery; Pharmacodynamics and pharmacokinetics of intraperitoneal chemotherapy; Genomics and peritoneal metastases; Techniques and safety issue for intraperitoneal chemotherapy; Learning curve for cytoreductive surgery; Peritoneal metastases from gastric cancer; Peritoneal metastases from mesothelioma; Peritoneal metastases from appendiceal cancer; Peritoneal metastasis from colorectal cancer; Peritoneal metastases from ovarian cancer; Palliative care of advanced peritoneal disease; and more!