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Crazy Paving is a combination of ground glass opacity with superimposed septal thickening (5).
It was first
Crazy Paving is ... heart failure, ARDS ... , AIP) #Clinical ... #Radiology #CTChest ... #Paving #Alveolar
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
to filling of alveoli ... Alveolar proteinosis ... septal thickening (crazy ... paving). 6. ... #Clinical #Radiology
Crazy Paving on Chest CT
 • Thickened interlobular septa in a background of diffuse GGO's.
 •
Crazy Paving on ... pna, pulm hge, ARDS ... #Paving #Sign # ... Pulmonary #diagnosis #radiology ... #clinical
On the left a patient with both septal thickening and ground glass opacity in a patchy
findings is called 'crazy ... paving'. ... Crazy paving was ... be specific for alveolar ... #Clinical #Radiology
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
characterized by diffuse alveolar ... distress syndrome (ARDS ... paving appearance ... density with a crazy-paving ... #Clinical #Radiology
Alveolar proteinosis is a rare disease characterized by filling of the alveolar spaces with PAS positive
Alveolar proteinosis ... filling of the alveolar ... HRCT pattern (crazy ... paving) and the ... #Clinical #Radiology
Key findings in alveolar proteinosis
- Crazy paving pattern: reticular pattern superimposed on ground glass opacification.
- Opacifications
Key findings in alveolar ... proteinosis - Crazy ... paving pattern: ... typical case of alveolar ... #Clinical #Radiology
Notice that even within each lobe there is a gravity dependent difference in density.
This is only
capillary leak like in ARDS ... #Clinical #Radiology ... #CTChest #CHF #Alveolar ... Pulmonary #Edema #AlveolarEdema
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Alveolar proteinosis ... septal thickening (crazy ... paving). 6. ... #Clinical #Radiology