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Radiogenomic correlation in lung adenocarcinoma with epidermal growth factor receptor mutations: Imaging features and histological subtypes

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Abstract

Objectives

To correlate imaging features of resected lung adenocarcinoma with epidermal growth factor receptor (EGFR) mutation and the IASLC/ATS/ERS classification histological subtypes.

Methods

In 250 consecutive patients with resected lung adenocarcinoma, EGFR mutation status was correlated with demographics, imaging features including ground-glass opacity (GGO) proportion and the IASLC/ATS/ERS classification histological subtypes.

Results

EGFR mutations were significantly more frequent in women (54.5 % vs. 38.1 %, p = 0.011) and in never-smokers (54.7 % vs. 35.3 %, p = 0.003). GGO proportion was significantly higher in tumours with EGFR mutation than in those without (30.3 ± 33.8 % vs. 19.0 ± 29.3 %, p = 0.005). EGFR mutation was significantly more frequent in tumours with GGO ≥ 50 % and tumours with any GGO (p = 0.026 and 0.008, respectively). Adenocarcinomas with exon 19 or 21 mutation showed significantly higher GGO proportion than that in EGFR wild-type tumours (p = 0.009 and 0.029, respectively). Absence of GGO was an independent predictor of negative EGFR mutation (odds ratio, 1.81; 95 % confidence interval, 1.16–3.04; p = 0.018).

Conclusions

GGO proportion in adenocarcinomas with EGFR mutation was significantly higher than that in EGFR wild-type tumours, and the absence of GGO on CT was an independent predictor of negative EGFR mutation.

Key Points

• Ground-glass opacity (GGO) proportion is significantly higher in EGFR-mutated adenocarcinomas

• Exon 19 or 21 mutated adenocarcinomas shows significantly higher GGO proportion

• GGO absence is an independent predictor of negative EGFR mutation in lung adenocarcinomas

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Acknowledgments

The scientific guarantor of this publication is Tae Jung Kim, MD, PhD. 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. This work was supported by grant no 02-2011-002 from the Seoul National University Bundang Hospital Research Fund. One of the authors has significant statistical expertise. Institutional Review Board approval was obtained. Written informed consent was waived by the Institutional Review Board. Methodology: retrospective, observational, performed at one institution.

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Author notes

  1. Tae Jung Kim

    Present address: Department of Radiology, Samsung Medical Center, Seoul, 135-710, Korea

Authors and Affiliations

  1. Department of Radiology, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, Korea

    Su Jin Hong, Tae Jung Kim & Kyung Won Lee

  2. Department of Radiology, School of Medicine, Hanyang University, Seoul, Korea

    Su Jin Hong & Yo Won Choi

  3. Department of Biochemistry, College of Medicine, Dankook Universicity, Cheonan, Korea

    Jeong-Soo Park

  4. Department of Pathology, Seoul National University Bundang Hospital, 300 Gumi-dong, Bundang-gu, Seongnam-si, Gyeonggi-do, 463-707, Korea

    Jin-Haeng Chung

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  1. Su Jin Hong
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Correspondence to Tae Jung Kim.

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Hong, S.J., Kim, T.J., Choi, Y.W. et al. Radiogenomic correlation in lung adenocarcinoma with epidermal growth factor receptor mutations: Imaging features and histological subtypes. Eur Radiol 26, 3660–3668 (2016). https://doi.org/10.1007/s00330-015-4196-z

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  • DOI: https://doi.org/10.1007/s00330-015-4196-z

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