The Peritoneal Surface Disease Severity Score (PSDSS) can be used to evaluate a patient with peritoneal metastases from a colorectal carcinoma.
Patient selection: colorectal carcinoma with peritoneal metastases
Parameters:
(1) clinical symptoms
(2) peritoneal cancer index (PCI)
(3) histologic features
Parameter
Finding
Points
cliinical symptoms
none
0
mild
1
severe
6
PCI
< 10
10 to 20
3
> 20
7
histology
well differentiated and N0 to N2
moderately differentiated and N0
moderately differentiated and N1 or N2
poorly differentiated and N0 to N1
9
signet ring and N0 to N1
where:
• Severe symptoms include a weight loss > 10%, unremitting pain, bowel obstruction or symptomatic ascites.
total score =
= SUM(points for all 3 parameters)
Interpretation:
• minimum score: 2
• maximum score: 22
Score
Stage
2 or 3
I
4 to 7
II
8 to 10
III
>= 11
IV
To read more or access our algorithms and calculators, please log in or register.
Specialty: Hematology Oncology