14 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
air-filled lesions ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... LowAttenuation #Differential ... #Diagram #Comparison
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Diagnosis Framework ... Antitripsyn Def • Cysts ... Differential #Diagnosis ... #pulmonary #radiology
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... associated pulmonary ... air, but occasionally ... #Clinical #Diagnosis ... #Radiology #CTChest
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
Sign on Chest CT ... • Patent airways ... #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
thickening, presence of air-fluid ... hypertension • Mosaic attenuation ... CT) • Broncho-arterial ... #differential # ... diagnosis
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... , high and low attenuation ... When the cysts have ... #Diagnosis #Radiology ... #Pulmonary #CXR
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
with air-trapping ... due to chronic ... #Radiology #Pulmonary ... #CTChest #MosaicAttenuation ... #Differential #
There is a hydropneumothorax.
Notice the air-fluid level (blue arrow).
The upper lobe is still attached to the
Notice the air-fluid ... is a possible diagnosis ... obstruction of small airways ... leading to pulmonary ... #Clinical #Radiology
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
-
There are two diagnostic ... bronchiolitis or chronic ... penicillamine) #Clinical ... #Radiology #CTChest ... #Comparison #RadiologyAssistant
Lung Abscess - Diagnosis and Management Summary

Lung Abscess Etiology:
 • Necrosis of lung parenchyma by a
Lung Abscess - Diagnosis ... pneumonia • Chronic ... Lung Abscess - Clinical ... lat decubitus - air ... CT Lung Abscess