Approach to pseudomyxoma peritonei

Table 1 Classification of pseudomyxoma peritonei

System	Classification
Ronnett et al[8]	DPAM: PMP with mucinous ascites on the surface of peritoneum. No invasion. Indolent course. Best prognosis PMCA: Higher percentage of malignant cells. Poorer prognosis PMCA-I: Intermediate hybrid between DPAM and PMCA
WHO	Low grade: Mucin pools with low grade dysplasia. Eighty-three percent of five-year OS High Grade: Mucin pools with high grade dysplasia. More likely for rupture and spillage into the peritoneal cavity. Sixty-eight percent of five-year OS

PMP: Pseudomyxoma peritonei; DPAM: Diffuse peritoneal adenomucinous; PMCA: Peritoneal mucinous carcinomatosis; PMCA-I: Peritoneal mucinous carcinamatosis-intermediate; OS: Overall survival; WHO: World Health Organization.