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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
- Lung cysts (LAM ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Differential #Diagram #Comparison ... #Honeycombing #
Radiologists use many terms to describe areas of decreased density or lucencies within the lung, like
pneumatocele, emphysema ... , bulla, honeycombing ... with a thin wall Emphysema ... #Lung #Pulmonary ... #Diagnosis #Radiology
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the differential diagnosis ... associated pulmonary ... emphysema. ... #Radiology #CTChest ... Emphysema #Comparison
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
- Differential Diagnosis ... Silicosis • Honeycombing ... Attenuation: • Emphysema ... Antitripsyn Def • Cysts ... #pulmonary #radiology
Honeycombing is defined by the presence of small cystic spaces with irregularly thickened walls composed of
Honeycombing is ... Honeycomb cysts ... from paraseptal emphysema ... #Diagnosis #Radiology ... #Pulmonary #Honeycombing
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
before the typical cysts ... bronchiolitis: ill ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #Differential #Comparison
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
UIP with honeycombing ... ) Differential diagnosis ... centrilobular emphysema ... #Radiology #CTChest ... #UIP #Comparison
Incidental Finding of Oleothorax - A chest radiograph showed a dense opacity in the upper area
abnormality includes an old ... calcified empyema ... for pulmonary tuberculosis ... #Clinical #PCC # ... Radiology #CXR #
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
are paraseptal emphysema ... broad differential diagnosis ... immunocompromised patient PCP ... probably would be pulmonary ... #Clinical #Radiology