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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
histiocytosis) - Bronchiectasis ... on the basis of HRCT ... #Diagnosis #Radiology ... Emphysema #SignetRing #RadiologyAssistant
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
with traction bronchiectasis ... Clinical #Radiology #HRCT ... Comparison #Table #RadiologyAssistant
On the left we see a chest film with a typical finger-in-glove shadow.
The HRCT shows focal
The HRCT shows focal ... bronchiectasis ... FingerInGlove #Sign #RadiologyAssistant
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
#Diagnosis #Radiology ... #Pulmonary #HRCT ... Central #Peripheral #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Pulmonary edema #Diagnosis ... Radiology #Pulmonary #HRCT ... #Upper #Lower #RadiologyAssistant
Figure 3 HRCT-LUS correlation in normal lung, pulmonary congestion, rheumatoid lung disease, idiopathic pulmonary fibrosis.
Notes: (A)
Figure 3 HRCT-LUS ... opacities and traction bronchiectasis ... abnormalities, traction bronchiectasis ... #Clinical #Diagnosis ... #HRCT #POCUS #Lung
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
The HRCT demonstrates ... honeycombing and traction bronchiectasis ... Honeycombing #Traction #Bronchiectasis ... TractionBronchiectasis #RadiologyAssistant
Bronchiectasis is defined as localized bronchial dilatation.
The diagnosis of bronchiectasis is usually based on a combination
Bronchiectasis is ... The diagnosis of ... bronchiectasis ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
in differential diagnosis ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #RadiologyAssistant
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... child-bearing age - Cystic bronchiectasis ... LIP #Clinical #Diagnosis ... Comparison #Table #RadiologyAssistant