9 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
decreased lung attenuation ... diseases with a low attenuation ... Radiology #Pulmonary #CTChest ... LowAttenuation #Differential ... #Diagram #Comparison
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
High Attenuation ... Chronic eosinophilic ... Chronic eosinophilic ... Radiology #HRCT #CTChest ... HighAttenuation #Pattern #Comparison
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Patterns - Differential ... Acute Eos PNA • Chronic ... Pneumonia, COP, Chronic ... #CT #Patterns #Differential
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Differential diagnosis ... with ground glass attenuation ... Radiology #Pulmonary #CTChest ... Carcinomatosis #Mimic #Differential ... #Comparison #Table
Bronchiectasis - Summary

What?
• Bronchiectasis is derived from the Greek words bronckos meaning airway and ectasis meaning
Symptoms: • Chronic ... Loss of weight • Chest ... hypertension • Mosaic attenuation ... high-resolution chest ... Bronchiectasis #pulmonary #differential
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
Mosaic attenuation ... The term 'mosaic attenuation ... oligemic lung due to chronic ... Radiology #Pulmonary #CTChest ... #Differential #
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
Chronic hypersensitivity ... of ground-glass attenuation ... and areas of low attenuation ... included in the differential ... Clinical #Radiology #CTChest
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
honeycombing (left) and chronic ... HP (right) Differential ... Chronic stage: - ... Diagnosis #Radiology #CTChest ... #UIP #Comparison
It can be difficult to distinguish these three entities.
There are two diagnostic hints for further differentiation:
-
bronchiolitis or chronic ... Clinical #Radiology #CTChest ... MosaicAttenuation #Mosaic #Attenuation ... #Comparison #RadiologyAssistant