Figure 1

Study enrollment flowchart. A total of 371 PMP patients were retrieved. Patients who combined with other tumors, received systemic chemotherapy before CRS, PCI assessment not be acquired, prior surgical score no less than 2, and of non-appendiceal origin were all excluded. Ultimately, 167 subjects were included. PMP: pseudomyxoma peritonei; CRS: cytoreductive surgery; PCI: peritoneal cancer index; PSS: prior surgical score.