“…The standard therapy for FN is a combination of antibiotics, which allows to treat a broad range of possible pathogens, achieves bactericidal serum concentrations, exerts a synergistic effect against some gram-negative bacilli and has a minimal risk of drug resistance during treatment [7,26] . However, with the worldwide decrease in the frequency of gram-negative infections in neutropenic patients and the availability of new antibiotics with extended spectrum of activity, the treatment of FN with a single antibiotic (monotherapy) is an alternative to combinations of beta-lactams plus aminoglycosides [5,7,10,11,27,28] . Because of its broad spectrum (including P. aeruginosa and gram-positive) and low toxicity, CFP is an excellent candidate for use as an empiric monotherapy [13,14,23] .…”