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On the left a patient who had a CT to rule out pulmonary embolism.
There is a
CT to rule out pulmonary ... thickening and ground-glass ... was cardiogenic pulmonary ... Clinical #Radiology #CTChest
COVID-19 Patterns of Lung Findings on Chest CT
1. Reverse Halo Sign
2. ARDS
3. Crazy-Paving Pattern
4. Bilateral Peripheral
Lung Findings on Chest ... Peripheral Ground Glass ... Patterns #Lung #Pulmonary ... ChestCT #radiology #CTChest
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
Ground-glass opacity ... Ground-glass opacity ... So ground-glass ... Diagnosis #Radiology #Pulmonary ... #CTChest #GGO #
#radiology #ctchest #differential

Differential Diagnosis of Ground-glass Opacity.

Some abbreviations
HP: Hypersensitive pneumonitis
DIP: Desquamative interstitial pneumonia
PAP: Pulmonary alveolar proteinosis
MIA:
#radiology #ctchest ... Diagnosis of Ground-glass ... pneumonia PAP: Pulmonary
On the left a patient with ground glass pattern in a mosaic distribution.
The clue here is
patient with ground glass ... enlargement of pulmonary ... areas of ground glass ... The ground glass ... Clinical #Radiology #CTChest
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Cardiogenic pulmonary ... diuretics, ground-glass ... lobeles with ground glass ... Cardiogenic pulmonary ... #CTChest #LymphangiticCarcinomatosis
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Cardiogenic pulmonary ... lines), ground-glass ... proteinosis: ground glass ... Cardiogenic pulmonary ... Radiology #HRCT #CTChest
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
nodules of ground-glass ... Diagnosis #Radiology #Pulmonary ... #CTChest #Nodular
Crazy Paving is a combination of ground glass opacity with superimposed septal thickening (5).
It was first
combination of ground glass ... Bronchoalveolarca (BAC) - Pulmonary ... Clinical #Radiology #CTChest
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
attenuation (ground-glass ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest