Chronic obstructive pulmonary disease and interstitial lung disease in patients with lung cancer |
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Authors: | Satoko MIZUNO Yuichi TAKIGUCHI Ayako FUJIKAWA Ken MOTOORI Yuji TADA Katsushi KUROSU Yasuo SEKINE Noriyuki YANAGAWA Kenzo HIROSHIMA Katsumi MURAOKA Toru MITSUSHIMA Noboru NIKI Nobuhiro TANABE Koichiro TATSUMI AND Takayuki KURIYAMA |
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Affiliation: | Departments of Respirology,;Thoracic Surgery and;Diagnostic Pathology, Graduate School of Medicine, Chiba University,;Department of Radiology, Chiba University Hospital, Chiba University,;Makuhari Clinic, Kameda General Hospital, Chiba, and;Department of Optical Science and Technology, Tokushima University, Tokushima, Japan |
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Abstract: | Background and objective: Although lung cancer is frequently accompanied by COPD and interstitial lung disease (ILD), the precise coincidence of these diseases with lung cancer is not well understood. The objectives of this study were to determine the prevalence of abnormal CT and spirometric findings suggestive of COPD or ILD in a population of patients with untreated lung cancer, and to estimate the lung cancer risk in this population. Methods: The study population consisted of 256 patients with untreated lung cancer and 947 subjects participating in a CT screening programme for lung cancer. Semi-quantitative analysis of low attenuation area (LAA), fibrosis and ground glass attenuation (GGA) on CT was performed by scoring. Gender- and age-matched subpopulations, with stratification by smoking status, were compared using the Mantel–Haenszel projection method. Results: Inter-observer consistency was excellent for LAA, but not as good for fibrosis or GGA scores. Pooled odds ratios for lung cancer risk using LAA, fibrosis, GGA scores and reduced FEV1/FVC and %VC were 3.63, 5.10, 2.71, 7.17 and 4.73, respectively ( P < 0.0001 for all parameters). Multivariate regression analyses confirmed these results. Conclusion: Abnormal CT and spirometric parameters suggestive of COPD and ILD were strong risk factors for lung cancer, even after adjusting for gender, age and smoking status. |
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Keywords: | COPD interstitial lung disease lung cancer radiology tobacco |
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