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CT characteristics of resolving ground-glass opacities in a lung cancer screening programme.

Abstract：

PURPOSE:This study aimed at evaluating the computed tomography (CT) characteristics of resolving localized ground-glass opacities (GGOs) in a screening programme for lung cancer. MATERIAL AND METHODS:280 patients at high-risk for lung cancer (221 men, 59 women; mean age, 58.6 years), divided into four groups (lung cancer history (n = 83), head and neck cancer history (n = 63), symptomatic (n = 88) and asymptomatic (n = 46) cigarette smokers), were included in a prospective trial with annual low-dose CT for lung cancer screening. We retrospectively reviewed all localized GGOs, analyzed the CT characteristics on initial CT scans and changes during follow-up (median 29.1 months). Variables associated with resolution of GGOs were tested using chi-square or Mann-Whitney tests. RESULTS:A total of 75 GGOs were detected in 37 patients; 54.7% were present at baseline and 45.3% appeared on annual CT. During follow-up, 56.2% persisted and 43.8% disappeared. The resolving localized GGOs were significantly more often lobular GGOs (p = 0.006), polygonal in shape (p = 0.02), mixed (p = 0.003) and larger (p < 0.0001) than non-resolving localized GGOs. CONCLUSION:Localized GGOs are frequent and many disappeared on follow-up. CT characteristics of resolving GGOs show significant differences compared to persistent ones. This study emphasizes the importance of short-term CT follow-up in subjects with localized GGOs.

journal_name

Eur J Radiol

journal_title

European journal of radiology

authors

Felix L,Serra-Tosio G,Lantuejoul S,Timsit JF,Moro-Sibilot D,Brambilla C,Ferretti GR

doi

10.1016/j.ejrad.2009.09.008

subject

Has Abstract

pub_date

2011-03-01 00:00:00

pages

410-6

issue

3

eissn

0720-048X

issn

1872-7727

pii

S0720-048X(09)00527-0

journal_volume

77

pub_type

杂志文章

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