The CHOP protocol is the reference treatment for large cell lymphomas, but several other schemes of different intensity have recently been studied with controversial clinical findings. We report here the results obtained at our institution with a CHOP-like regimen called Firenze 2 (Fi2), which is characterised by an original scheduling of chemotherapy administration. A total of 225 patients, who were diagnosed from 1974 to 1996, were included in this retrospective study. All patients received the Fi2 regimen as a first-line intervention. One-hundred and sixty-two (72%) achieved complete remission; the overall survival at 120 months was 51% with a disease-free survival of 67% (median follow-up = 78 months). The survival curve showed a stable plateau of 42% after 16 years, which remained stable for further 4 years. In a multivariate survival analysis, achievement of complete remission (p<0.001) and IPI index of 0 or 1 (p=0.05) were significantly associated with a better survival. Overall, the outcome of our patients was similar to that reported by others, but the distinguishing feature of our study is the very long follow-up of the patients. Our study confirms that first generation regimens are effective and can cure a substantial proportion of patients. The long-term results of our study are helpful to retrospectively identify high-risk patients whose prognosis is poor and who can be candidates for more aggressive schemes of chemotherapy.

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