Simultaneous integrated boost volumetric modulated arc therapy for middle or lower esophageal cancer using elective nodal irradiation: Comparison with 3D conformal radiotherapy

Kotaro Yoshio, Akihisa Wakita, Toshiharu Mitsuhashi, Takahiro Kitayama, Kento Hisazumi, Daisaku Inoue, Nobuhisa Tajiri, Tsuyoki Shiode, Shiro Akaki, Susumu Kanazawa

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

We investigated the feasibility of simultaneous integrated boost (SIB) volumetric modulated arc therapy (VMAT) using elective nodal irradiation (ENI) for middle or lower esophageal cancer and compared it with three-dimensional conformal radiotherapy (3D-CRT). The study included 15 patients. The prescribed doses included a standard dose (50.4 Gy) and a high dose (60 Gy) for the planning target volume (PTV) of the involved lesions. The objective of the whole lung volume receiving ≥ 20 Gy (V20Gy) was < 30%, and the mean lung dose (MLD) was < 20 Gy. The volumes of the lung receiving 5 Gy (V5Gy) and the heart receiving 30-50 Gy (V30-50Gy) were kept as low as reasonably achievable. As a result, SIB-VMAT showed superior dose conformity for the PTV (p < 0.001). Although the lung V5Gy was significantly increased (p < 0.001), the V20Gy and MLD showed no significant increase. The heart V30-50Gy showed a > 20% reduction in the mean against 3D-CRTs. Our results demonstrate the feasibility of SIB-VMAT for the treatment of middle or lower esophageal cancer with ENI. Although attention should be paid to the low-dose area of the lungs, SIB-VMAT would be a promising treatment option with improved outcomes for esophageal cancer.

Original languageEnglish
Pages (from-to)247-254
Number of pages8
JournalActa medica Okayama
Volume73
Issue number3
Publication statusPublished - 2019

Keywords

  • 3D-CRT
  • Elective nodal irradiation
  • Esophageal cancer
  • Middle and lower thoracic
  • Volumetric modulated arc therapy

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

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