Dr. Gerald Diaz @GeraldMD
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Board Certified Internal Medicine Hospitalist, GrepMed Editor in Chief πŸ‡΅πŸ‡­ πŸ‡ΊπŸ‡Έ - Sign up for an account to like, bookmark and upload images to contribute to our community platform. Follow us on IG: https://www.instagram.com/grepmed/ | Twitter: https://twitter.com/grepmeded/
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Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity pneumonitis ... : ill defined centrilobular ... Radiology #HRCT #CTChest ... #Comparison #Table ... #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity pneumonitis ... Hypersensitivity pneumonitis ... Radiology #Pulmonary #CTChest ... Differential #Comparison #Table ... #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
hypersensitivity pneumonitis ... hypersensitivity pneumonitis ... and intralobular reticular ... Radiology #CXR #CTChest ... Chronic #Fibrosis #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... Hypersensitivity pneumonitis ... #Differential #Table ... #Upper #Lower #RadiologyAssistant
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 ... Interstitial - Reticular ... opacities - Fine Nodular ... Consolidation #Patterns #RadiologyAssistant
On the left a chest film of a patient with UIP due to IPF.
The findings on
honeycombing comprises reticular ... Radiology #CXR #CTChest ... #Interstitial #Pneumonitis ... #Reticular #ILD ... #RadiologyAssistant
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
specific interstitial pneumonitis ... Radiology #HRCT #CTChest ... Pattern #Comparison #Table ... #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
nodules and the nodular ... thickening in the reticular ... Pulmonary #HRCT #CTChest ... Perilymphatic #Nodular ... #Differential #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
four patterns: reticular ... , nodular, high ... low attenuation (table ... On a Chest X-Ray ... #Differential #RadiologyAssistant
HRCT findings in UIP
Honeycombing consisting of multilayered thick-walled cysts.
Architectural distortion with traction bronchiectasis due to fibrosis.
Predominance
Mild mediastinal ... Clinical #Radiology #CTChest ... #Interstitial #Pneumonitis ... #ILD #RadiologyAssistant