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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
: reticular, nodular ... low attenuation (table ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #RadiologyAssistant
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... - Emphysema - Lung ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Emphysema #SignetRing #RadiologyAssistant
Radiographic Features of Pulmonary Diseases
 - Pneumonia
 - Atelectasis
 - Emphysema
 - Pneumothorax
 - Effusion
 -
Radiographic Features of Pulmonary ... Interstitial - Nodular ... #Diseases #Radiology ... #Patterns #Lung ... #Differential #Diagnosis
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... edema #Diagnosis ... #Radiology #Pulmonary ... #Differential #Table ... #Upper #Lower #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... Differential #Comparison #Table ... #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
opacities - Fine Nodular ... mass - Solitary Pulmonary ... Masses Atelectasis #Diagnosis ... #Clinical #Radiology ... #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
in differential diagnosis ... the reticular pattern ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... ILD #Findings #RadiologyAssistant
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
, pulmonary congestion ... artifact); (G) UIP pattern ... #Clinical #Diagnosis ... #HRCT #POCUS #Lung ... #Correlation #Table
Hilar and mediastinal lymphadenopathy
In sarcoidosis the common pattern is right paratracheal and bilateral hilar adenopathy ('1-2-3-sign').
In
sarcoidosis the common pattern ... In lung carcinoma ... #Diagnosis #Radiology ... #Pulmonary #Mediastinal ... #Differential #RadiologyAssistant