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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
abnormalities that result ... on the basis of HRCT ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Diagram #Comparison
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
consolidation as a result ... #Clinical #Radiology ... #HRCT #CTChest ... HighAttenuation #Pattern #Comparison
Sarcoidosis
In this case the chest x-ray shows subtle findings that could be described as fine reticulation.
In
the chest x-ray ... HRCT is needed to ... The HRCT - not shown ... appearance as a result ... #Clinical #Radiology
Clues to Differential Diagnosis of Central Cyanosis: Onset of cyanosis, Clubbing, Secondary erythrocytosis, Auscultation, X-ray, Echocardiography,
Clues to Differential ... diseases - Pulmonary ... Diagnosis #Central #Cardiology ... #Causes #Table ... #Comparison
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
the overlap in differential ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #Perilymphatic ... #Nodular #Differential
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... seen and in many cases ... #Diagnosis #Radiology ... #Pulmonary #CXR ... Interstitial #Pattern #Differential
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... either be the result ... bronchiolitis #Diagnosis #Radiology ... #Pulmonary #CTChest ... #GroundGlass #Differential
Chest Pain - Differential Diagnosis Framework

Cardiovascular Causes of Chest Pain:
 • Myocardium:
	- Myocarditis
	- CAD/ACS
	- Valvulopathy
	- Myopericarditis
Chest Pain - Differential ... - Tamponade Pulmonary ... Causes of Chest ... Pain #ChestPain #Differential ... #Cardiology
Chest Pain - Differential Diagnosis Algorithm
Cardiovascular Causes:
 - Outflow Obstruction
     • Aortic
Chest Pain - Differential ... • Myocarditis Pulmonary ... Vascular • Pulmonary ... ChestPain #Noncardiac #Cardiology ... #Differential #
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
The pulmonary vascular ... non-perfused vessels and causes ... This results in ... In these cases comparison ... #Clinical #Radiology