Table 1.
Grading schemes for tumor histology sections
Grade 0 | Grade 1 | Grade 2 | Grade 3 | Grade 4 | |
---|---|---|---|---|---|
Percent of necrosis per section | 0 | 1–15 | 16–49 | 50–74 | 75–100 |
Neutrophils per 400× field† | 0–10 | 11–25 | 26–49 | >50 | >150 |
Lymphocytes per 400× field‡ | 0–5 | 6–15 | 16–30 | >30 | >150 |
Notes:
The microscopic field with the most severe neutrophilic infiltrate was utilized;
the microscopic field with the most severe lymphocytic infiltrate was utilized.