Significant drop in serum C-reactive protein in patients with solid neoplasia and bacterial infection is associated with a better prognosis and identifies candidates for short-course antibiotic therapy.

When hospital mortality was studied, stratified into groups according to the percentage of decrease in CRP on the 5th day of antibiotic therapy (decrease of up to 20%; 20 to 40%; 40 to 60%; 60 to 80%; and above 80% in serum levels), there was a clear trend indicating that the greater the decline in CRP, the higher the probability of a decrease in mortality (Fig. 3 ).

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