29 results
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
organizing pneumonia (COP ... result of massive fibrosis ... COP. ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
Ground-glass opacity (GGO ... HRCT as seen in fibrosis ... disease (i.e. fibrosis ... Radiology #Pulmonary #CTChest ... #Differential #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
with peripheral areas ... end-stage with massive fibrosis ... presenting as areas ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
Mosaic pattern with areas ... atenuation and areas ... Fibrosis and parenchymal ... Radiology #CXR #CTChest ... #RadiologyAssistant
On the left two cases of NSIP.
Note the varying combination of GGO and fibrosis (traction bronchiectasis),
combination of GGO ... and fibrosis (traction ... Clinical #Radiology #CTChest ... NonspecificInterstitialPneumonia #ILD #RadiologyAssistant
Atoll Sign (Reverse-Halo Sign) on Chest CT
 • Central GGO surrounded by a crescentic or circumferential
Atoll Sign (Reverse-Halo ... Sign) on Chest ... CT • Central GGO ... consolidation • DDx: COP ... doi.org/10.1016/j.chest
On the left we see consolidation and ground-glass opacity in a patient with persistent chest abnormalities
weight loss without signs ... we can rule out fibrosis ... Clinical #Radiology #CTChest ... #GroundGlass #GGO ... BronchioloalveolarCarcinoma #RadiologyAssistant
On the left two cases with chronic consolidation. 
There are patchy non-segmental consolidations in a subpleural
In fibrosis there ... will be other signs ... of fibrosis like ... Clinical #Radiology #CTChest ... OrganizingPneumonia #RadiologyAssistant
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
dilatation (signet-ring sign ... A signet-ring sign ... chronic bronchitis, COPD ... and cystic fibrosis ... #Differential #RadiologyAssistant
HRCT findings in OP
- Bilateral peripheral consolidations, sharply demarcated.
- Consolidations may be migratory.
- Lesions may show
HRCT findings in OP ... restricted to areas ... Clinical #Radiology #CTChest ... #COP #Cryptogenic ... Pneumonia #ILD #RadiologyAssistant