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- Current Situation of Proton Therapy for Hodgkin Lymphoma: From Expectations to Evidence
Current Situation of Proton Therapy for Hodgkin Lymphoma: From Expectations to Evidence
Authors
Pierre Loap, Alfredo Mirandola, Ludovic De Marzi, Remi Dendale, Alberto Iannalfi, Viviana Vitolo, Amelia Barcellini, Andrea Riccardo Filippi, Barbara Alicja Jereczek-Fossa, Youlia Kirova, Ester Orlandi
Abstract
Consolidative radiation therapy (RT) is of prime importance for early-stage Hodgkin lymphoma (HL) management since it significantly increases progression-free survival (PFS). Nevertheless, first-generation techniques, relying on large irradiation fields, delivered significant radiation doses to critical organs-at-risk (OARs, such as the heart, to the lung or the breasts) when treating mediastinal HL; consequently, secondary cancers, and cardiac and lung toxicity were substantially increased. Fortunately, HL RT has drastically evolved and, nowadays, state-of-the-art RT techniques efficiently spare critical organs-at-risks without altering local control or overall survival. Recently, proton therapy has been evaluated for mediastinal HL treatment, due to its possibility to significantly reduce integral dose to OARs, which is expected to limit second neoplasm risk and reduce late toxicity. Nevertheless, clinical experience for this recent technique is still limited worldwide. Based on current literature, this critical review aims to examine the current practice of proton therapy for mediastinal HL irradiation.