Impact of postoperative daily image-guided intensity-modulated radiotherapy on overall and local progression-free survival in patients with oral cavity cancer.
BMC Cancer
; 16: 139, 2016 Feb 23.
Article
em En
| MEDLINE
| ID: mdl-26906330
ABSTRACT
BACKGROUND:
We compared the outcome of patients who received non-image-guided intensity-modulated radiotherapy (IMRT) with those who received helical tomotherapy (HT), a daily image-guided radiotherapy (IGRT), after surgery for oral cavity cancer (OCC).METHODS:
During the period November 2006 to December 2013, a total of 152 postoperative OCC patients underwent either IMRT (n = 79) or daily IGRT (n = 73) 4 to 6 weeks after surgery. Patients in the IMRT group received 6 MV photon beams to 7 fields and those in the IGRT group received daily fractions of 1.8 or 2 Gy on five consecutive days.RESULTS:
Patients who received daily IGRT had higher 5-year overall survival than those who received IMRT (87% versus 48%, p = 0.015). The local progression-free survival rate was also higher in patients who received IGRT (85% versus 58%, p = 0.006). More patients in the IGRT group completed the package of overall treatment time in ≤ 13 weeks and completed their course of radiation therapy in ≤ 8 weeks than patients in the IMRT group (89% versus 68%, p = 0.002; 84% versus 58%, p = 0.001), respectively. The rate of local failure in the primary tumor area was 24.0 % in the IMRT group and 6.8% in the IGRT group. Among patients with primary local failure, the marginal failure rate was 52.6% in the IMRT group and 0 % in the IGRT group.CONCLUSIONS:
For patients with locally advanced OCC, postoperative IGRT results in better overall survival, better local progression-free survival, less marginal failure and shorter overall treatment time than postoperative non-image-guided IMRT.
Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Neoplasias Bucais
/
Radioterapia de Intensidade Modulada
/
Radioterapia Guiada por Imagem
Tipo de estudo:
Observational_studies
Limite:
Adult
/
Aged
/
Female
/
Humans
/
Male
/
Middle aged
Idioma:
En
Ano de publicação:
2016
Tipo de documento:
Article