The Diagnostic Value of the Pleural Fluid C-Reactive Protein in Parapneumonic Effusions

Figure 2

Receiver operator characteristic (ROC) analysis curves of pleural fluid CRP levels for differentiating between different effusion types. (a) ROC curve of CRP levels for differentiating parapneumonic pleural effusions from other types of pleural effusions such as malignant, heart failure, and post-lung transplantation effusions. (b) ROC curve of CRP levels for differentiating between parapneumonic and malignant effusions. (c) ROC curve of CRP for differentiating between parapneumonic and heart failure pleural effusions. (d) ROC curve of CRP for differentiating empyema from other types of effusion such as malignant, heart failure, and uncomplicated parapneumonic pleural effusions.

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