Malignant Pleural Effusion: Diagnosis and Management

Table 1

A prognostic score for malignant pleural effusions (LENT) [33].

	Variable	Score
L	LDH in pleural fluid
	<1,500 UI/L	0
	>1,500 UI/L	1
E	ECOG performance score
	0	0
	1	1
	2	2
	3-4	3
N	Neutrophil/lymphocyte ratio
	<9	0
	>9	1
T	Type of tumour
	Low risk (mesothelioma and hematologic malignancies)	0
	Moderate risk (breast cancer, gynecological, and renal cell carcinoma)	1
	High risk (lung cancer and other tumours)	2
	Risk by category	Total score
	Low risk (median of survival: 319 days)	0-1
	Moderate risk (median of survival: 130 days)	2–4
	High risk (median of survival: 44 days)	5–7

ECOG, eastern cooperative oncology group; LDH, lactate dehydrogenase.