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Prognostic value of post-induction chemotherapy 18F-FDG PET-CT in stage II/III non-small cell lung cancer before (chemo-) radiation

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  • Julien Ganem
  • Sebastien Thureau
  • Pierrick Gouel
  • Bernard Dubray
  • Mathieu Salaun
  • Edgar Texte
  • Pierre Vera

Abstract

Introduction: The purpose of our present study was to assess the prognostic impact of FDG PET-CT after induction chemotherapy for patients with inoperable non-small-cell lung cancer (NSCLC). Material and methods: This retrospective study included 50 patients with inoperable stage II/III NSCLC from January 2012 to July 2015. They were treated for curative intent with induction chemotherapy, followed by concomitant chemoradiation therapy or sequential radiation therapy. FDG PET-CT scans were acquired at initial staging (PET1) and after the last cycle of induction therapy (PET2). Five parameters were evaluated on both scans: SUVmax, SUVpeak, SUVmean, TLG, MTV, and their respective deltas. The prognostic value of each parameter for overall survival (OS) and progression-free survival (PFS) was evaluated with Cox proportional-hazards regression models. Results: Median follow-up was 19 months. PET1 parameters, clinical and histopathological data were not predictive of the outcome. TLG2 and ΔTLG were prognostic factors for OS. TLG2 was the only prognostic factor for PFS. For OS, log-rank test showed that there was a better prognosis for patients with TLG2 23cc and ΔSUVmax> -55% had significantly shorter OS than the other patients (HR = 5.7, 95%CI 2.1–15.4, p

Suggested Citation

  • Julien Ganem & Sebastien Thureau & Pierrick Gouel & Bernard Dubray & Mathieu Salaun & Edgar Texte & Pierre Vera, 2019. "Prognostic value of post-induction chemotherapy 18F-FDG PET-CT in stage II/III non-small cell lung cancer before (chemo-) radiation," PLOS ONE, Public Library of Science, vol. 14(10), pages 1-13, October.
    • Handle: RePEc:plo:pone00:0222885
    DOI: 10.1371/journal.pone.0222885
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