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Revised IPI
| Item | Score | |
| 0 | 1 | |
| IPI, international prognostic index; ECOG, Eastern Cooperative Oncology Group; LDH, lactate dehydrogenase. | ||
| Age (year) | ≤60 | >60 |
| ECOG score | 0 or 1 | 2−4 |
| Clinical stages | I or II | III or IV |
| Number of sites of extranodal invasion | <2 | ≥2 |
| LDH | Normal | Rise |
