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Early osteosclerotic changes predict chemotherapy response in non-small-cell lung cancer patients with bone metastases

  • Computed Tomography
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Abstract

Objectives

To explore the relationship between osteosclerotic changes and chemotherapy response in non-small-cell lung cancer (NSCLC) patients with bone metastases (BM).

Methods

Fifty-two NSCLC patients with BM were enrolled from 1 January 2010–31 June 2015 and divided into two groups based on their CT features: an osteosclerotic change (OC) group and a no-osteosclerotic change (NOC) group. The disease control rate (DCR) was evaluated, and progression-free survival (PFS) was analysed using Kaplan-Meier curves. Univariate and multivariate Cox regression analyses were performed to analyse the factors that could affect PFS.

Results

Osteosclerotic changes were observed in 35/52 patients. The median interval when osteosclerotic changes occurred was 2 months (range 1–3 months) after chemotherapy. The OC group had a significantly higher 3-month DCR than the NOC group (p < 0.001). The OC group had a higher 1-year PFS rate than the NOC group (1-year PFS: 74.9% vs. 30.2%, p < 0.001). Univariate Cox regression analysis indicated that pathological subtype (HR = 4.419; 95% CI = 1.635–11.941, p = 0.003) and osteosclerotic changes (HR = 0.199; 95% CI = 0.083–0.477, p < 0.001) were significant predictors of PFS.

Conclusion

Early osteosclerotic changes predict chemotherapy response in NSCLC patients with BM.

Key Points

Osteosclerotic changes were prevalent CT features after chemotherapy in NSCLC patients.

Osteosclerotic changes were positively related to increased 3-month DCR.

Osteosclerotic changes were positively related to increased 1-year PFS rate.

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Abbreviations

BM:

Bone metastases

CT:

Computed tomography

DCR:

Disease control rate

NOC:

Without osteosclerotic changes

NSCLC:

Non-small-cell lung cancer

OC:

Osteosclerotic changes

PFS:

Progression-free survival

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Acknowledgements

We thank the native English-speaking scientists of American Journal Experts for editing our manuscript.

Funding

The authors state that this work has not received any funding.

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Authors

Corresponding author

Correspondence to Rong Zhang.

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Guarantor

The scientific guarantor of this publication is Rong Zhang, Sun Yat-Sen University Cancer Center

Conflict of interest

The authors of this manuscript declare no relationships with any companies, whose products or services may be related to the subject matter of the article.

Statistics and biometry

No complex statistical methods were necessary for this paper.

Informed consent

Written informed consent was not required for this study because this was a retrospective study

Ethical approval

Institutional Review Board approval was obtained.

Methodology

• retrospective

• observational

• performed at one institution

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Rong, D., Mao, Y., Yang, Q. et al. Early osteosclerotic changes predict chemotherapy response in non-small-cell lung cancer patients with bone metastases. Eur Radiol 28, 4362–4369 (2018). https://doi.org/10.1007/s00330-017-5253-6

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  • DOI: https://doi.org/10.1007/s00330-017-5253-6

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