Ground Glass Opacities: Causes & Reasons

Possible Causes for Ground Glass Opacities

(b) Unenhanced CT image in a 15-year-old male patient shows subtle nodular ground-glass opacities in the posterior segment of left lower lobe. [pubs.rsna.org]

The lesion density was heterogeneous, accompanied by ground‐glass opacities and pleural thickening (Figure 1C). [onlinelibrary.wiley.com]

There are bilateral ground-glass opacities with a posterior predominance. [radiologyassistant.nl]

Acute Respiratory Distress Syndrome

Chest computed tomography (CT) on arrival showed ground glass opacity (GGO) in the bilateral lungs with emphysematous change. [ncbi.nlm.nih.gov]

[…] to diffuse ground glass opacity with / without interlobular septal thickening Dorsal consolidation due to infiltrate Proliferative / organizing phase Ground glass opacity [pathologyoutlines.com]

He had hypoxemia with diffuse ground glass opacity evident on chest radiography, which progressed and required mechanical ventilation. [ncbi.nlm.nih.gov]

Influenza Pneumonia

RESULTS: The most common HRCT findings were ground-glass opacities (85%), consolidation (64%), or a combination of ground-glass opacities and consolidation (58%). [scielo.br]

Case Discussion The most common HRCT findings of H1N1 pneumonia are ground-glass opacities, consolidations, and a combination of ground-glass opacities and consolidations, [radiopaedia.org]

A lobular distribution of the ground-glass opacities was evident in one patient. [ajronline.org]

Lingular Pneumonia

Patchy infiltrates with areas of ground glass opacity were also seen in the lingula and left lower lobe (Fig. 1). [archbronconeumol.org]

(C) Axial view of chest computed tomography reveals smooth interlobular septal thickenings with mild ground glass opacity in anterior and medial subpleural regions of both [kjim.org]

[citation needed] See also[edit] Ground-glass opacity Pulmonary consolidation References[edit] ^ "Assessment of persistent pulmonary infiltrate - Differential diagnosis of [en.wikipedia.org]

Bronchioloalveolar Carcinoma

OBJECTIVE: Small bronchioloalveolar carcinoma showing pure ground-glass opacity on high-resolution computed tomographic scans is commonly multifocal. [ncbi.nlm.nih.gov]

INTRODUCTION: The objective of this study was to evaluate the clinical characteristics and long-term outcome of multiple pure ground-glass opacity (GGO) lesions detected in [ncbi.nlm.nih.gov]

OBJECTIVE: The purpose of our study was to investigate the differentiation between bronchioloalveolar carcinoma and atypical adenomatous hyperplasia manifesting pure ground-glass [ncbi.nlm.nih.gov]

Interstitial Lung Disease

Features of nonfibrotic interstitial lung disease: Ground-glass opacities Nodules Mosaic attenuation or consolidation. [mdedge.com]

Chest computed tomography revealed progressive bilateral ground-glass opacity (GGO) and traction bronchiectasis. We diagnosed DILD due to pazopanib. [ncbi.nlm.nih.gov]

On the 47th day following crizotinib initiation, a chest computed tomography scan revealed ground-glass opacities with a clinical manifestation of desaturation, although a [ncbi.nlm.nih.gov]

Cryptogenic Organizing Pneumonia

RESULTS: The most common patterns of parenchymal abnormalities of cryptogenic organizing pneumonia were ground-glass opacity (28/31 patients, 90%) and consolidation (27/31 [ncbi.nlm.nih.gov]

(90%) Size of consolidation from few cm in size to whole lobe Often admixed with ground-glass opacities Air-bronchograms common, often dilated Bilateral, lower zones Lung [radiologykey.com]

Ground-glass opacities were found ln four cases. All patients had enlarged lymph nodes (1-1.5 cm) in the mediastinum. [ncbi.nlm.nih.gov]

Respiratory Bronchiolitis Interstitial Lung Disease

Figure 1: Transverse CT scan shows centrilobular micronodules and patchy ground-glass opacity typical of respiratory bronchiolitis–interstitial lung disease. [xctmr.com]

[…] nodules, and ground-glass opacities associated with upper lobe centrilobular emphysema are most frequently reported. [ncbi.nlm.nih.gov]

On HRCT appearances consider: non-specific interstitial pneumonitis (NSIP) changes of fibrosis: lung volume loss, reticular opacities, and traction bronchiectasis ground glass [radiopaedia.org]

Acute Interstitial Pneumonitis

Ground-glass opacities are present in the majority of patients with UIP but are usually limited in extent (,17). [pubs.rsna.org]

ground-glass opacities. [ajronline.org]

AIP appears as extensive, mixed ground-glass opacity and consolidation. [ekjm.org]

Desquamative Interstitial Pneumonia

[…] thin-walled cysts within the ground glass opacities. [ncbi.nlm.nih.gov]

HRCT shows multifocal or diffuse, basilar, subpleural ground-glass opacities. Cysts may be present, often in areas of ground-glass opacity. [msdmanuals.com]

Computed tomography (CT) or high resolution (HR) CT at presentation showed ground glass opacities and/or consolidation in all patients, with one third of patients also showing [ncbi.nlm.nih.gov]

Idiopathic Interstitial Pneumonia

Two observers working independently and without knowledge of the diagnosis evaluated the extent and distribution of various thin-section CT findings (ground-glass opacity, [ncbi.nlm.nih.gov]

glass nodules & Lower lung predominant peripheralground glass opacity (exceeds patchy ground glass opacities subpleural ground glass attenuation Bilateral diffuse ground [slideshare.net]

[…] thickening and intralobular lines are often observed superimposed on the ground-glass opacities (“crazy-paving” pattern). 79 The ground-glass opacities usually involve all [journals.lww.com]

Secondary Pulmonary Fibrosis

Glass Opacity Ground Glass Opacity Ground Glass Opacity Ground Glass Opacity  Increased lung density with visible vessels  Increased lung density with visible vessels  [learningradiology.com]

Increase in reticular opacities (sign of fibrosis ) Ground-glass opacities and honeycombing CT or HR- CT : Irregular thickening of the interlobular septa, honeycombing, and [amboss.com]

glass opacities focal but not widespread Classic cases can be diagnosed by xray and do not need biopsy confirmation Histopathologic features Heterogeneous pattern of alternating [surgpathcriteria.stanford.edu]

Pulmonary Capillary Hemangiomatosis

BACKGROUND: Centrilobular ground-glass opacity (GGO) is one of the characteristic findings in chest high-resolution computed tomography (HRCT) of patients with pulmonary veno-occlusive [ncbi.nlm.nih.gov]

We report a case of pulmonary capillary hemangiomatosis-like foci (PCH-like foci), presenting as multiple ground-glass opacities (GGOs) on high resolution computed tomography [ncbi.nlm.nih.gov]

Chest CT revealed diffusely spread patchy ground-glass opacities sparing subpleural parenchymal areas suggesting the diagnosis of pulmonary veno-occlusive disease (PVOD). [ncbi.nlm.nih.gov]

Hemangiomatosis

Facts Terminology Rare cause of pulmonary hypertension due to proliferation of alveolar capillaries within lung Imaging Findings Enlarged pulmonary arteries + centrilobular ground-glass [radiologykey.com]

CT chest typically shows wide spread ill defined centrilobular nodules of ground glass opacity. [en.wikipedia.org]

Radiology shows diffuse centrilobular ground-glass opacities. [ncbi.nlm.nih.gov]

Idiopathic Pulmonary Fibrosis

High-resolution computed tomography (HRCT) showed increasing bilateral ground-glass opacity superimposed on the usual interstitial pneumonia pattern. [ncbi.nlm.nih.gov]

Chest X-ray and CT showed ground-glass opacities in both lungs in addition to preexisting honeycombing. [ncbi.nlm.nih.gov]

Four months after treatment with nintedanib, high-resolution computed tomography findings revealed reduced areas of ground-glass opacity and consolidation; 13 months after [ncbi.nlm.nih.gov]

Nitrofurantoin Toxicity

glass opacities in the more acute phase and a mixed picture of ground glass, consolidation and fibrosis in chronic presentations though with no clearly defined distribution [academic.oup.com]

Figure 3 Figure 3: CT scan of the chest showing bilateral peripheral patchy consolidations and ground-glass opacities in nitrofurantoin-associated pulmonary toxicity. [ispub.com]

Chest radiographs reveal ill-defined reticular opacities, ground-glass opacity, or consolidation. [31] A basal prominence is typical. [emedicine.medscape.com]

Diffuse Alveolar Hemorrhage

RESULTS: The predominant HRCT findings were ground-glass opacities and airspace nodules (both n = 12, 75%), ground-glass nodules (n = 9, 56.25%), consolidations (n = 7, 43.75% [ncbi.nlm.nih.gov]

A 41-year-old woman exhibited bloody sputum and ground glass opacities in the lungs along with tumor growth during nivolumab therapy for multiple lung metastases of malignant [ncbi.nlm.nih.gov]

Chest CT showed diffuse ground-glass opacity with pulmonary thromboembolism. [ncbi.nlm.nih.gov]

Cystic Lung Disease

opacities and nodules. [ncbi.nlm.nih.gov]

Multifocal/diffuse cysts may be associated with nodules (lymphoid interstitial pneumonia, light-chain deposition disease, amyloidosis, and Langerhans cell histiocytosis) or with ground-glass [mayoclinic.pure.elsevier.com]

By itself, diffuse ground-glass opacification has a wide differential diagnosis, but the identification of small cysts admixed within the ground glass opacity is a unique [link.springer.com]

Pulmonary Metastasis

Thoracic computed tomography revealed unusual radiological findings: consolidation accompanied with ground-glass opacity. [ncbi.nlm.nih.gov]

Computed tomography showed widespread infiltration and a ground-glass opacity in the lung and dilation of the intrahepatic bile duct. [ncbi.nlm.nih.gov]

A halo of ground-glass opacity  Ground-glass opacity surrounding a mass or a nodule which represents haemorrhage.  Seen in choriocarcinoma & angiosarcoma. 16. [slideshare.net]

Honeycomb Lung

opacity and consolidation DIP Variable Smokers with multifocal or diffuse ground-glass opacity Hypersensitivity pneumonitis Mid-lungs Tends to spare extreme bases, unlike [lifeinthefastlane.com]

Ground-glass opacity Ground-glass opacity (GGO) represents: Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or tumor cells. [radiologyassistant.nl]

Ground-glass opacities are sparse or absent. [err.ersjournals.com]

Pleural Calcification

The main HRCT findings of asbestosis are small subpleural nodular opacities, subpleural lines, ground-glass opacities, parenchymal bands, bronchiectasis and traction bronchiolectasis [ncbi.nlm.nih.gov]

[…] appearanc or pattern) 또는 간유리 증가음영(ground-glass opacity) 폐무늬(lung marking), 기관지혈관무늬(bronchovascular marking) 또는 혈관무늬(vascular marking) 감염성 폐질환 폐렴 및 폐농양 폐결핵 원발성 폐결핵(primary [clinicclinic2.cafe24.com]

결절성 양상(nodular pattern) 및 망상-결절성 음영(reticulonodular density) 폐포성(alveolar) 폐병변 간질성(interstitial) 폐병변 공기-기관지 조영 징후(air-bronchogram sign) 실루엣 징후(silhouette sign) 간유리 양상(ground-glass [clinicclinic2.cafe24.com]

Lymphocytic Interstitial Pneumonia

Lymphocytic Interstitial Pneumonitis Coronal NECT shows multiple thin-walled cysts in a background of diffuse ground-glass opacities. [radiologykey.com]

Computed tomography of the chest in patients with LIP may reveal ground-glass opacities, centrilobular and subpleural nodules, and randomly distributed thin-walled cysts. [ncbi.nlm.nih.gov]

Computed tomography scan showed ground-glass opacities, cystic lesions, and bronchiectasis. [ncbi.nlm.nih.gov]

Acute Sarcoidosis

opacities with hilar lymphadenopathy → disseminated, reticulonodular infiltrates Stage III Bilateral reticular or ground-glass opacities without hilar lymphadenopathy Stage [amboss.com]

[…] and variants Stages Chronic sarcoidosis Chest x-ray findings Stage 0 Normal findings Stage I Bilateral hilar lymphadenopathy (reversible)* Stage II Bilateral reticular or ground-glass [amboss.com]

Pulmonary Tumor Embolism

A chest CT scan showed dilated pulmonary arteries, right ventricular enlargement and mosaic ground-glass opacities in both lungs. [ncbi.nlm.nih.gov]

Ground-Glass Nodules: If Growing, Assume Cancer Blair Westerly, MD The more CT scans that are performed, the more ground-glass opacities (GGO’s) are seen and what to do with [pulmccm.org]

CTPA showing non-specific ground-glass opacities with interlobular septal thickening at lungs' apex (a) associated with discrete diffuse ground-glass opacities throughout [journals.sagepub.com]

Pulmonary Hemorrhage

High-resolution CT demonstrated bilateral areas of consolidation with air bronchogram and ground glass opacities, as well as small bilateral pleural effusions. [ncbi.nlm.nih.gov]

The drop in his hemoglobin levels and diffuse ground-glass opacity at all levels of the lung fields on chest computed tomography were a significant clue to diagnosis. [ncbi.nlm.nih.gov]

If ground glass opacities and interlobular septal thickening coexist, a crazy-paving pattern can be seen. [jbsr.be]

Bronchial Adenocarcinoma

Chest X‑rays indicated pulmonary overinflation and patchy ground‑glass opacity. [spandidos-publications.com]

[…] differential of a solitary pulmonary nodule differential of ground glass opacity non-small cell lung cancer adenocarcinoma of the lung invasive adenocarcinoma of the lung [radiopaedia.org]

[…] differential of a solitary pulmonary nodule differential of ground glass opacity Non-small cell lung cancer adenocarcinoma of the lung invasive adenocarcinoma of the lung [radiopaedia.org]

Necrotizing Alveolitis

It is better to refer to the differential for a particular radiographic feature: differential for centrilobular nodular opacities differential for ground glass opacities [radiopaedia.org]

The predominant finding is ground glass opacity (GGO). [radiologyassistant.nl]

Ground-glass opacities • Reticular opacities • Thin-walled cysts • Rare honeycombing 5-year survival: more than 95% Respiratory bronchiolitis– associated interstitial lung [slideshare.net]

Acute Interstitial Lung Disease

OBJECTIVE: We compared iodine concentration in pulmonary ground-glass opacity on iodine density images of contrast-enhanced chest dual-energy computed tomography (DECT) between [ncbi.nlm.nih.gov]

Computed tomography (CT) revealed diffuse ground glass opacities and consolidations in both lungs, and analysis of bronchoalveolar lavage fluid revealed pronounced lymphocytosis [ncbi.nlm.nih.gov]

Figure 1: High-resolution CT scan images showing bilateral ground-glass opacities with interstitial inflammation with fibrosis. [omcr.oxfordjournals.org]

Lipid Pneumonia

Chest radiograph shows ground-glass opacities ( arrows ) in right lung. [dx.doi.org]

Alveolar consolidations (57%), ground glass opacities (39%), and alveolar nodules (23%) were the most common radiological abnormalities. [ncbi.nlm.nih.gov]

Axial CT image shows consolidation and ground-glass opacities in middle lobe and focal nodular opacities in left lower lobe. [dx.doi.org]

Autoimmune Pulmonary Alveolar Proteinosis

Here, we report a rare case of autoimmune PAP appearing as localized ground-glass opacity. [ncbi.nlm.nih.gov]

A case of pulmonary alveolar proteinosis that showed solitary ground-glass opacity in the subpleural area. Nihon Kokyuki Gakkai Zasshi. 2010;48:516–9. [link.springer.com]

A 55-year-old non-smoking woman was admitted to our hospital for re-evaluation of unimproved peripheral ground-glass opacities despite prednisolone and cyclosporine treatment [ncbi.nlm.nih.gov]