[Proton therapy for head and neck cancers]. / Place de la protonthérapie en cancérologie ORL.
Cancer Radiother
; 21(6-7): 515-520, 2017 Oct.
Article
em Fr
| MEDLINE
| ID: mdl-28869195
ABSTRACT
The absence of exit dose and the sharp lateral penumbra are key assets for proton therapy, which are responsible for its dosimetric superiority over advanced photon radiotherapy. Dosimetric comparisons have consistently shown a reduction of the integral dose and the dose to organs at risk favouring intensity-modulated proton therapy (IMPT) over intensity-modulated radiotherapy (IMRT). The structures that benefit the most of these dosimetric improvements in head and neck cancers are the anterior oral cavity, the posterior fossa, the visual apparatus and swallowing structures. A number of publications have concluded that these dosimetric differences actually translate into reduced toxicities with IMPT, for example with regards to reduced weight loss or need for feeding tube. Patient survival is usually similar to IMRT series, except in base of skull or sinonasal malignancies, where a survival advantage of IMPT could exist. The goals of the present review is to describe the major characteristics of proton therapy, to analyse the clinical data with regards to head and neck cancer patients, and to highlight the issue of patient selection and physical and biological uncertainties.
Palavras-chave
Texto completo:
1
Base de dados:
MEDLINE
Assunto principal:
Terapia com Prótons
/
Neoplasias de Cabeça e Pescoço
Idioma:
Fr
Ano de publicação:
2017
Tipo de documento:
Article