The LENT score calculation
| Variable | Score | |
|---|---|---|
| L | LDH level in pleural fluid (IU/L) | |
| <1500 | 0 | |
| >1500 | 1 | |
| E | ECOG PS | |
| 0 | 0 | |
| 1 | 1 | |
| 2 | 2 | |
| 3–4 | 3 | |
| N | NLR | |
| <9 | 0 | |
| >9 | 1 | |
| T | Tumour type | |
| Lowest risk tumour types ▸ Mesothelioma ▸ Haematological malignancy | 0 | |
| Moderate risk tumour types ▸ Breast cancer ▸ Gynaecological cancer ▸ Renal cell carcinoma | 1 | |
| Highest risk tumour types ▸ Lung cancer ▸ Other tumour types | 2 | |
| Risk categories | Total score | |
| Low risk | 0–1 | |
| Moderate risk | 2–4 | |
| High risk | 5–7 | |
ECOG PS, Eastern Cooperative Oncology Group performance score; LDH, lactate dehydrogenase; NLR, neutrophil-to-lymphocyte ratio.