Unfavorable Experience with Hypofractionated Radiotherapy in Unresectable Lung Cancer

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Abstract
The use of a reduced number of large-sized fractions in radiotherapy (hypofractionation) is usually associated with poor therapeutic results and severe adverse effects, in accord with radiobiologic concepts. However by some authors unresectable lung cancer patients have been treated with hypofractionated radiotherapy with the main aim of « convenience ». Result and damage rates are reported to be comparable to those of conventional treatment. In our experience, based on palliative irradiation of 86 advanced-stage, nonmicrocytoma patients, objective remission rates, subjective and performance status improvement, and survival overall were as poor as could be expected in this kind of presentation, with no striking impact of this treatment modality. Severe adverse effects were shown by a large proportion of cases involving skin and soft tissues of the chest wall (40 %) and lungs (55.5 %). The incidence of severe damage was in agreement with BED (biologic effective dose) values, differently from other experiences of radiotherapeutic management of advanced lung cancer with large fractions.

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