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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 ]
Peribronchial cuffing, also referred to as peribronchial thickening or bronchial wall thickening, is a radiologic sign which occurs when excess fluid or mucus buildup in the small airway passages of the lung causes localized patches of atelectasis (lung collapse). [1]
Consolidation or infiltrate can be dense or patchy and might have irregular, ill-defined, or hazy borders. Dense homogenous opacity in right, middle and lower lobe of primary pulmonary TB. Chest x-ray showing patchy opacification on the upper right and mid-zone lung with fibrotic shadows, as well as bilateral hilar lymphadenopathy.
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]
Ground-glass opacity; Pulmonary consolidation; References This page was last edited on 1 July 2024, at 17:20 (UTC). Text is available under the Creative Commons ...
Ground glass appearance or hazy opacities associated with the consolidation are detected in most patients. Histologically, cryptogenic organizing pneumonia is characterized by the presence of polypoid plugs of loose organizing connective tissue (Masson bodies) within alveolar ducts, alveoli, and bronchioles.
Allergic bronchopulmonary aspergillosis; Other names: ABPA, Hinson-Pepys disease. The chest radiograph of an allergic bronchopulmonary aspergillosis patient shown with left-sided perihilar opacity (blue arrow) along with non-homogeneous infiltrates (transient pulmonary infiltrates indicated by red arrows) in all zones of both lung fields.
Small Opacities: The reader will categorize small opacities according to shape and size. The small, rounded opacities are p (up to about 1.5 mm), q (about 1.5 mm to about 3 mm), or r (exceeding about 3mm and up to about 10 mm). Small, irregular opacities are classified by width as s, t, or u (same respective sizes as for small, rounded opacities).