title: [Localized pure or mixed ground-glass lung opacities].
abstract: Localized ground-glass opacities (GGOs) have been recently individualized and account for between 2.9% and 19% of all pulmonary nodules detected in high-risk patients included in CT screening series for lung cancer. These opacities, nodular, lobular or flat, correspond to benign lesions (localised infectious and inflammatory diseases, focal interstitial fibrosis, and atypical alveolar hyperplasia) or malignant lesions (bronchioloalveolar carcinoma, early-stage adenocarcinoma and sometimes metastases). Localized GGOs are more likely to be malignant than solid nodules and prognosis is related to the percentage of the ground-glass component. However, doubling time of pure localized malignant GGOs is longer than mixed localized malignant GGOs and even longer than the doubling time of solid malignant nodules. Therefore, localized GGOs warrant a dedicated diagnostic workup.
authors: Clinique Universitaire de Radiologie et Imagerie Médicale, Pôle d'Imagerie, CHU de Grenoble, France. lfelix@chu-grenoble.fr
authors: L
authors: L
authors: Félix
authors: S
authors: S
authors: Lantuejoul
authors: A
authors: A
authors: Jankowski
authors: G
authors: G
authors: Ferretti
mesh_terms: D000230:Adenocarcinoma / Q000145:classification / Q000000981:diagnostic imaging* / Q000473:pathology; D002282:Adenocarcinoma, Bronchiolo-Alveolar / Q000000981:diagnostic imaging*; D000465:Algorithms; D001706:Biopsy; D002986:Clinical Trials as Topic; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D006965:Hyperplasia; D008168:Lung / Q000473:pathology; D008175:Lung Neoplasms / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology / Q000556:secondary; D008875:Middle Aged; D009367:Neoplasm Staging; D011379:Prognosis; D011650:Pulmonary Alveoli / Q000473:pathology; D013902:Radiography, Thoracic / Q000379:methods*; D012307:Risk Factors; D012907:Smoking / Q000009:adverse effects; D003074:Solitary Pulmonary Nodule / Q000000981:diagnostic imaging* / Q000209:etiology / Q000473:pathology; D014057:Tomography, X-Ray Computed / Q000379:methods*