How to Calculate the GOG Score
Things You'll Need
- Tumor size
- LVSI
- Depth of tumor invasion
- Calculator
Instructions
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1
Determine the tumor's size. As an example, a tumor has size of 5 mm.
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2
Determine the relative-risk for depth of the tumor. A tumor with 3 mm, 4 mm, 5 mm, 6 mm, 7 mm, 8 mm or 10 mm penetration will have a relative risk of 1.0, 3.0, 7.2, 14, 21, 26 or 31, respectively. Following the example, because the tumor is 5 mm it would have a relative-risk for depth of 7.2.
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3
Determine if the tumor has lymphatic space involvement. If it does not, use 1.0 in the calculation. If it does, use 1.7 in the calculation. In the example, a tumor does have lymphatic space involvement.
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4
Multiply the tumor size by the relative-risk for depth figure by the lymphatic space involvement figure to calculate the GOG score. In the example, multiply 5 by 7.2 by 1.7. The GOG score is 61.2.
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