Demicco et al reported a revised score for a patient with solitary fibrous tumor based on 4 rather than 3 variables. The authors are from Mt Sinai Hospital. M.D. Anderson Cancer Center, Northwell Health, and Cold Spring Harbor Laboratory.
Patient selection: solitary fibrous tumor (SFT)
Parameter added to previous score: tumor necrosis
Parameters:
(1) mitoses per 10 high power fields
(2) age of the patient in years
(3) tumor size in cm
(4) tumor necrosis in percent
Parameter
Fiinding
Points
mitoses
0 per 10 hpf
0
1 to 3 per 10 hpf
1
>= 4 per 10 hpf
2
age
< 55 years
0
>= 55 years
1
tumor size
< 5 cm
0
5.0 to 9.9 cm
1
10 to 14.9 cm
2
>= 15 cm
3
necrosis
< 10%
0
>= 10%
1
total score =
= SUM(points for all of the parameters)
Interpretation:
• minimum score: 0
• maximum score: 7
Total Score
Risk Category
10-Year Metastases-Free
0 to 3
low
100%
4 or 5
intermediate
50%
6 or 7
high
0%
Performance:
• The area under the ROC curve is 0.90.
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