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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
disease comes from HRCT ... On HRCT there are ... On a Chest X-Ray ... detected on a chest ... Diagnosis #Radiology #Pulmonary
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
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
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 ... A HRCT is needed ... #Interstitial #
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
Figure 3 HRCT-LUS ... fibrosis. ... subpleural, basal reticular ... #POCUS #Lung #Correlation ... #Table #ILD #Findings
Rheumatoid arthritis (RA): Extra-articular manifestations
Skin: 
 • Inflammation of skin (esp. over areas of stress) forms
Ulcers, Livedo reticularis ... Pericarditis) -> Chest ... Dyspnea, pleuritic chest ... lung disease/pulmonary ... fibrosis (mechanism
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
combinations of fibrosis ... morphologic findings on HRCT ... Diagnosis #Radiology #Pulmonary ... #CTChest #Idiopathic ... IdiopathicInterstitialPneumonia #ILD
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
Amiodarone Induced Lung Toxicity Summary

Who?
• 5% of patients
• Dose ≥ 400 mg per day

How?  Possible
Pleuritic chest ... Exclusion of other ILDs ... ground glass or reticular ... opacities on chest ... confirmatory findings on HRCT
CT and ultrasonographic features of COVID-19 pneumonia
Lung CT:
 - Thickened pleura
 - Ground glass shadow and
and effusion - Pulmonary ... infection; alveolar interstitial ... fibrosis #COVID19 ... #pneumonia #ChestCT ... #Ultrasound #POCUS