Table 2.
Grade | Histology |
---|---|
Grade 0 | Granules absent or barely discernible at ×400 magnification |
Grade 1 | Granules barely discernible at ×250 magnification and easily confirmed at ×100 |
Grade 2 | Discrete granules resolved at ×100 magnification |
Grade 3 | Discrete granules resolved at ×25 magnification |
Grade 4 | Masses visible at ×10 magnification or by naked eye |