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Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest ... consolidation - Multifocal ill-defined ... consolidations Interstitial ... - Reticular interstitial ... mass - Solitary Pulmonary
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
four patterns: reticular ... On a Chest X-Ray ... detected on a chest ... presents as a reticular ... Diagnosis #Radiology #Pulmonary
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
Pericarditis) -> Chest ... Dyspnea, pleuritic chest ... tends to cause interstitial ... lung disease/pulmonary ... fibrosis (mechanism
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Diagnosis Framework Reticular ... Lymphangitic Carcinoma, Interstitial ... Honeycombing: Idiopathic Pulmonary ... HiRes #HighRes #Chest
On the left a chest film of a patient with UIP due to IPF.
The findings on
On the left a chest ... findings on the chest ... Whenever you see a chest ... UsualInterstitialPneumonitis #Usual #Interstitial ... #ILD #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
by fluid, fibrous ... in a pattern of reticular ... pulmonary edema ... Kerley B lines on chest ... #HRCT #CTChest
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Weakness, Loss of Chest ... Elasticity (flail chest ... Intracardiac, Pulmonary ... Lung Disease, Interstitial ... Fibrosis, Interstitial
Usual Interstitial Pneumonia (UIP) pattern on Chest CT
75 M with progressive dyspnea. Typical usual interstitial pneumonia
UIP) pattern on Chest ... UIP Idiopathic pulmonary ... fibrosis = idiopathic ... Pneumonia #UIP #IPF #ChestCT ... #radiology #pulmonary
Causes of Chronic Dyspnea - Differential Diagnosis Algorithm
Pericardial
 • Effusion
 • Cardiac Tamponade*
 • Constriction
Myocardial
 •
Thickening/Masses Chest ... • Neoplasm Pulmonary ... Interstitium ... • ILD • CHF ... Vessels • Pulmonary
UIP
UIP is a histologic pattern of pulmonary fibrosis.
On a chest X-ray UIP manifests as a reticular
histologic pattern of pulmonary ... fibrosis. ... On a chest X-ray ... manifests as a reticular ... #Interstitial #