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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
there are four patterns ... and what kind of pattern ... the most common pattern ... The ground-glass pattern ... The cystic pattern
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
idiopathic interstitial pneumonias ... indicates unknown cause ... listed in the table ... have specific patterns ... realise, that these patterns
Here another case of hypersensitivity pneumonitis.
There is a mosaic pattern.
Some secundary lobules demonstrate ground-glass opacity due
Here another case ... hypersensitivity pneumonitis ... There is a mosaic pattern ... opacity due to lung ... bronchiolitis with air
Acute interstitial pneumonia (AIP, earlier named Hamman Rich Pneumonitis) is a rare idiopathic lung disease characterized
named Hamman Rich Pneumonitis ... rare idiopathic lung ... characterized by diffuse ... The histologic pattern ... characteristics are diffuse
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
artifact); (G) UIP ... pattern with subpleural ... Diagnosis #HRCT #POCUS ... #Lung #Correlation ... #Table #ILD #Findings
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
other interstitial pneumonias ... Unknown • 6-7 cases ... consolidation and GG pattern ... Hypersensitivity pneumonitis ... Pulmonary lymphoma, Diffuse
Subacute hypersensitivity pneumonitis
The key findings in the subacute hypersensitivity pneumonitis are:
ill-defined centrilobular nodules of ground-glass opacity
hypersensitivity pneumonitis ... opacity (80% of cases ... ) or mosaic pattern ... opacity due to lung ... bronchiolitis with air
Algorithm for Diagnosis of Diffuse Cystic Lung Disease (DCLD)
Round, smooth cysts with normal lung parenchyma in
Algorithm for Diagnosis ... Lung Disease (DCLD ... - LIP/FB, LCDD ... , SS Cyst pattern ... DCLD #pulmonary #Algorithm
Chronic hypersensitivity pneumonitis (2)
The case on the left shows an inspiratory and expiratory scan: the mosaic
(2) The case on ... scan: the mosaic pattern ... scan, indicating air ... mid and lower lung ... with a mozaic pattern
Authors: Mark M. Ramzy, DO, EMT-P (@MarkRamzyDO, EM Resident Physician, Drexel University, Department of Emergency Medicine)
SpO2 88% on room air ... This post will focus ... chest radiograph pattern ... Most commonly caused ... Radiology #CTChest #Lung