World Health Organization classification of follicular lymphoma (FL).
| Follicular Lymphoma: Grading & Variants . |
|---|
| Abbreviations: HPF, high power field |
| Grade 1, 0–5 centroblasts/HPF |
| Grade 2, 6–15 centroblasts/HPF |
| Grade 3, > 15 centroblasts/HPF |
| 3a, > 15 centroblasts, but centrocytes are still present |
| 3b, centroblasts form solid sheets with no residual centrocytes |
| Variants: |
| Cutaneous follicle center lymphoma |
| Diffuse follicle center lymphoma |
| Grade 1, 0–5 centroblasts/HPF |
| Grade 2, 6–15 centroblasts/HPF |
| Follicular Lymphoma: Grading & Variants . |
|---|
| Abbreviations: HPF, high power field |
| Grade 1, 0–5 centroblasts/HPF |
| Grade 2, 6–15 centroblasts/HPF |
| Grade 3, > 15 centroblasts/HPF |
| 3a, > 15 centroblasts, but centrocytes are still present |
| 3b, centroblasts form solid sheets with no residual centrocytes |
| Variants: |
| Cutaneous follicle center lymphoma |
| Diffuse follicle center lymphoma |
| Grade 1, 0–5 centroblasts/HPF |
| Grade 2, 6–15 centroblasts/HPF |