Grading system for risk stratification of Spitz tumors
Grading system for risk stratification of Spitz tumors
Parameter
Score
Age (years)
0 to 10
0
11 to 17
1
Diameter (mm)
0 to 10
0
>10
1
Subcutaneous involvement
Absent
0
Present
2
Ulceration
Absent
0
Present
2
Mitotic activity (/mm2)
0 to 5
0
6 to 8
2
>8
5
Total*
* A total score of 0 to 2 indicates low risk; a total score of 3 to 4 indicates intermediate risk; a total score of 5 to 11 indicates high risk, strongly suspicious for melanoma.