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Oesophageal Foreign Body
In the thorax; a local non-homogenous midline opacity causing oesphageal dilation.
See the hypaxial muscular edge, trachea deviating ventrally.
Cranial Mediastinal Mass
Homogenous soft tissue opacity mass causing thickening of the cranial mediastinum so that it is wider than the adjacent body wall.
Loss of cardiac silhouette cranially.
Trachea will be displaced (focally deviated)
Pale lung with multiple smooth walled, discrete soft-tissue opaque nodules.
Non-specific interstitial nodular pattern
Metastasis DONT MINERALISE
Oesophagus is dilated with air => trachea deviates ventrally from its normal course and can see the hypaxial muscles under the spine.
DV view- V shape of the oesophagus over the heart as it decreases in size to get through the diaphragm
Megaoesphagus with aspiration pneumonia
- Same as for megaoesophagus plus;
- Increased opacity in the ventral lung, loss of cardiac silhouette.
Blackened airways against the solid opacity in the lungs- "trees in the fog" air bronchograms
Cardiomegaly with LA enlargement
Heart takes up >50% of the thorax causing deviation of the trachea towards the spine.
- Enlarged LA;
- on the lateral view appears as a caudodorsal protrusion on the cardiac silhouette.
- on the DV view the enlarged LA summates to make an area of increased opacity in the middle of the cardiac silhouette.
- Left auricle enlargement;
- causes a bilateral bulge in the cardiac silhouette on DV view.
Cardiomegaly with LA elargement and pulmonary oedema
same as for cardiomegaly with LA enlargment plus;
caudodorsal increased lung opacity (homogenous caudodorsal infiltrates)
Not much aerated lung and the lung edges are rounded
Fluid opacity outside of the lungs
Lung retracted away from the inside of the ribs
Pleural fissure lines- fluid dissects between lungs lobes (VD view)
Loss of cardiac silhouette
Lung is retracted away from the body wall. Lung is contracted down therefore is increased opacity and has sharply demarcated smooth margins.
Radiolucency outside of the lungs (air). Can see lung lobation
Look at dorsal body wall- this is the first location that pneumothorax is seen
Primary pulmonary tumour
A single discrete lung opacity ~ medium sized
Soft tissue opaque, kind of round, NO trees in the fog.
Bronchopneumonia (alveolar disease)
Lung is consolidated (increased opacity) ventrally.
Blackened airways against the solid opacity of the lung- "trees in the fog"- air bronchograms
Lobar sign over the heart- between diseased and normal lung lobes.
Airway pattern (bronchial pattern)
Bronchial wall thickening (peripherally) "Donuts and Tramlines"
Air in alveoli and air in airway lumen => lung is predominantly radiolucent (may be some interstitial haze)
Madonna bra- collapsed right middle lung lobe.
Globoid enlargement of the heart
Lungs look normal (unless it has progressed to right-sided heart failure)
Can't really see the heart- can see the edge of the pericardial sac.
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