Increased mean lung density: Another independent predictor of lung cancer?

Nicola Sverzellati, Giorgia Randi, Paolo Spagnolo, Alfonso Marchianò, Mario Silva, Jan Martin Kuhnigk, Carlo La Vecchia, Maurizio Zompatori, Ugo Pastorino

Research output: Contribution to journalArticlepeer-review

Abstract

Objectives: To investigate the relationship between emphysema phenotype, mean lung density (MLD), lung function and lung cancer by using an automated multiple feature analysis tool on thin-section computed tomography (CT) data. Methods: Both emphysema phenotype and MLD evaluated by automated quantitative CT analysis were compared between outpatients and screening participants with lung cancer (n = 119) and controls (n = 989). Emphysema phenotype was defined by assessing features such as extent, distribution on core/peel of the lung and hole size. Adjusted multiple logistic regression models were used to evaluate independent associations of CT densitometric measurements and pulmonary function test (PFT) with lung cancer risk. Results: No emphysema feature was associated with lung cancer. Lung cancer risk increased with decreasing values of forced expiratory volume in 1 s (FEV1) independently of MLD (OR 5.37, 95% CI: 2.63-10.97 for FEV1 <60% vs. FEV1 ≥ 90%), and with increasing MLD independently of FEV1 (OR 3.00, 95% CI: 1.60-5.63 for MLD > -823 vs. MLD <-857 Hounsfield units). Conclusion: Emphysema per se was not associated with lung cancer whereas decreased FEV1 was confirmed as being a strong and independent risk factor. The cross-sectional association between increased MLD and lung cancer requires future validations.

Original languageEnglish
Pages (from-to)1325-1331
Number of pages7
JournalEuropean Journal of Radiology
Volume82
Issue number8
DOIs
Publication statusPublished - Aug 2013

Keywords

  • Airflow obstruction
  • CT
  • Emphysema
  • Phenotype
  • Quantitative CT

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging
  • Medicine(all)

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