Pulmonology · Oncology · Palliative Care

LENT Score for Malignant Pleural Effusion calculator

Enter the published formula inputs below to calculate and interpret this score.

Clinical inputs

Pleural fluid LDH

ECOG performance status

Serum neutrophil-to-lymphocyte ratio (NLR)

Tumor type

Result

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For qualified clinicians. Independently verify inputs, calculations, source guidance, and applicability before any clinical action. This calculator does not replace clinical judgment.

Source: Clive AO et al. Predicting survival in malignant pleural effusion: development and validation of the LENT prognostic score. Thorax. DOI: 10.1136/thoraxjnl-2014-205285. PMID: 25100651. Scope: LENT = pleural fluid LDH, ECOG, serum NLR, and tumor type points (Table 3): pleural fluid LDH <1500 IU/L = 0, >1500 = 1; ECOG 0 = 0, 1 = 1, 2 = 2, 3–4 = 3; NLR <9 = 0, >9 = 1; mesothelioma or haematological malignancy = 0, breast, gynaecological or renal cell carcinoma = 1, lung cancer or other tumours = 2. Total 0–7: low risk 0–1 (median survival 319 days), moderate 2–4 (130 days), high 5–7 (44 days). (2014)

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Clinical inputs

Pleural fluid LDH
ECOG performance status
Serum neutrophil-to-lymphocyte ratio (NLR)
Tumor type

Primary source

Clive AO et al. Predicting survival in malignant pleural effusion: development and validation of the LENT prognostic score. Thorax. DOI: 10.1136/thoraxjnl-2014-205285. PMID: 25100651. Scope: LENT = pleural fluid LDH, ECOG, serum NLR, and tumor type points (Table 3): pleural fluid LDH <1500 IU/L = 0, >1500 = 1; ECOG 0 = 0, 1 = 1, 2 = 2, 3–4 = 3; NLR <9 = 0, >9 = 1; mesothelioma or haematological malignancy = 0, breast, gynaecological or renal cell carcinoma = 1, lung cancer or other tumours = 2. Total 0–7: low risk 0–1 (median survival 319 days), moderate 2–4 (130 days), high 5–7 (44 days). (2014)

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