. Author manuscript; available in PMC: 2013 Sep 12.

Published in final edited form as: European J Clin Med Oncol. 2012 Jul;4(2):25–32.

Table 2.

Proposed staging system for malignant peritoneal mesothelioma.

Tumor (T)
T1	PCI 1-10
T2	PCI 11-20
T3	PCI 21-30
T4	PCI 31-39

Lymph Nodes (N)
N0	No lymph node metastases
N1	Positive lymph node metastases

Distant Metastasis (M)
Distant Metastasis (M)	No extra-abdominal metastatic disease
M0	No extra-abdominal metastatic disease
M1	Extra-abdominal metastatic disease

Stage	Tumor (T)	Lymph Nodes (N)	Distant Metastasis (M)	Estimated 5-year Survival
I	T1	N0	M0	87%
II	T2-3	N0	M0	53%
III	T4	N0/1	M0/1	29%
	T1-4	N1	M0/1
	T1-4	N0/1	M1

PCI—peritoneal cancer index