In October 2006, a consensus statement from the Peritoneal Surface Malignancy Group (PSMG), a group of 72 leading national and international surgical oncologists from 55 cancer centers in 14 countries, including the United States, was published in the Annals of Surgical Oncology. The group concluded that surgery followed by heated chemotherapy delivered through the lower abdomen of the patient, may significantly increase the life expectancy for patients with Stage IV colorectal cancer.