Outcomes after stereotactic body radiotherapy for lung tumors, with emphasis on comparison of primary lung cancer and metastatic lung tumors

Takaya Yamamoto, Keiichi Jingu, Yuko Shirata, Masashi Koto, Haruo Matsushita, Toshiyuki Sugawara, Masaki Kubozono, Rei Umezawa, Keiko Abe, Noriyuki Kadoya, Youjirou Ishikawa, Maiko Kozumi, Noriyoshi Takahashi, Ken Takeda, Yoshihiro Takai

Research output: Contribution to journalArticlepeer-review

28 Citations (Scopus)

Abstract

Background: The goal of this study was to determine the prognostic factors associated with an improved overall outcome after stereotactic body radiotherapy (SBRT) for primary lung cancer and metastatic lung tumors.Methods: A total of 229 lung tumors in 201 patients were included in the study. SBRT of 45 Gy in 3 fractions, 48 Gy in 4 fractions, 60 Gy in 8 fractions or 60 Gy in 15 fractions was typically used to treat 172 primary lungs cancer in 164 patients and 57 metastatic lung tumors in 37 patients between January 2001 and December 2011. Prognostic factors for local control (LC) and overall survival (OS) were analyzed using a Cox proportional hazards model.Results: The median biologically effective dose was 105.6 Gy based on alpha/beta = 10 (BED10). The median follow-up period was 41.9 months. The 3-year LC and OS rates were 72.5% and 60.9%, and the 5-year LC and OS rates were 67.8% and 38.1%, respectively. Radiation pneumonitis of grades 2, 3 and 5 occurred in 22 petients, 6 patients and 1 patient, respectively. Multivariate analyses revealed that tumor origin (primary lung cancer or metastatic lung tumor, p < 0.001), tumor diameter (p = 0.005), BED10 (p = 0.029) and date of treatment (p = 0.011) were significant independent predictors for LC and that gender (p = 0.012), tumor origin (p = 0.001) and tumor diameter (p < 0.001) were significant independent predictors for OS.Conclusions: SBRT resulted in good LC and tolerable treatment-related toxicities. Tumor origin and tumor diameter are significant independent predictors for both overall survival and local control.

Original languageEnglish
Article number464
JournalBMC Cancer
Volume14
Issue number1
DOIs
Publication statusPublished - 2014 Jun 23

Keywords

  • Metastatic lung tumor
  • Oligometastasis
  • Primary lung cancer
  • Prognostic factor
  • SBRT
  • Stereotactic radiotherapy

ASJC Scopus subject areas

  • Genetics
  • Oncology
  • Cancer Research

Fingerprint Dive into the research topics of 'Outcomes after stereotactic body radiotherapy for lung tumors, with emphasis on comparison of primary lung cancer and metastatic lung tumors'. Together they form a unique fingerprint.

Cite this