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Ground-glass opacity (GGO) is a finding seen on chest x-ray (radiograph) or computed tomography (CT) imaging of the lungs. It is typically defined as an area of hazy opacification (x-ray) or increased attenuation (CT) due to air displacement by fluid, airway collapse, fibrosis , or a neoplastic process . [ 1 ]
Bat wing appearance is a radiologic sign referring to bilateral perihilar lung shadowing seen in frontal chest X-ray and in chest CT. [1] [2] The most common reason for bat wing appearance is the accumulation of oedema fluid in the lungs. [3] The batwing sign is symmetrical, usually showing ground glass appearance and spares the lung cortices. [4]
In A, axial CT scan of the chest showing a right lower lobe pulmonary nodule surrounded by areas of ground-glass opacity (the CT halo sign). In B, axial CT scan of the chest showing multiple, randomly distributed pulmonary nodules surrounded by the CT halo sign; the final diagnosis was aspergillosis. Differential diagnosis: temporal arteritis
There may be superimposed CT features such as mild ground-glass opacity, reticular pattern and pulmonary ossification. Probable UIP pattern: [4] Predominantly subpleural and basal; Often heterogenous distribution; Reticular pattern with peripheral traction bronchiectasis or bronchiolectasis; There may be mild ground-glass opacity; Indeterminate ...
The lung bases are often inconsistent in appearance in patients due to the potential for atelectasis causing positional ground glass or consolidative opacities. When the patient is positioned prone, or on their belly, the lung bases can expand further and help distinguish atelectasis from early fibrosis. In patients with normal chest ...
X-ray and CT of ground glass opacities and pneumothorax in pneumocystis pneumonia. [7] Pneumothorax is a well-known complication of PCP. [8] Also, a condition similar to acute respiratory distress syndrome (ARDS) may occur in patients with severe Pneumocystis pneumonia, and such individuals may require intubation. [9]
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A chest X-ray showing a very prominent wedge-shape area of airspace consolidation in the right lung characteristic of acute bacterial lobar pneumonia. Ground glass. extrinsic allergic alveolitis; desquamative interstitial pneumonia; alveolar proteinosis; infant respiratory distress syndrome (RDS) Consolidation. pneumonia; alveolar haemorrhage