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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Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... four patterns: ... (table). ... in many cases UIP ... RadiologyAssistant
Antinuclear Antibody Testing - Nuclear and Cytoplasmic Patterns
Nuclear Patterns:
 β€’ Homogeneous pattern: 
   -
Nuclear Patterns ... - SLE, SSc, AIH ... : β€’ Reticular/ ... SLE, SjS, CTD-ILD ... #differential #
On the left a patient with DIP.
The HRCT shows diffuse areas of ground-glass density in the
The HRCT shows diffuse ... some mosaic pattern ... Reticular abnormalities ... DesquamativeInterstitialPneumonia #ILD ... #RadiologyAssistant
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Clinical #Radiology #HRCT ... CTChest #Nodular #Pattern ... #Comparison #Table ... #RadiologyAssistant
The CXR demonstrates a reticular interstitial pattern with a preference at the lung bases.
The HRCT demonstrates
interstitial pattern ... The HRCT demonstrates ... honeycombing and ... #Interstitial #Pattern ... TractionBronchiectasis #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... the nodules are diffuse ... NodularPattern #Nodular #Pattern ... #Algorithm #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
the overlap in differential ... thickening in the reticular ... pattern. ... Radiology #Pulmonary #HRCT ... #RadiologyAssistant
Whenever you see an area of increased density within the lung, it must be the result
of these four patterns ... resulting in lobar, diffuse ... fine or coarse reticular ... Consolidation #Patterns ... #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... have specific patterns ... morphologic findings on HRCT ... realise, that these patterns ... , OP and LIP have
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
The table summarizes ... to look at the pattern ... more than one pattern ... pneumonia (OP) and ... #Table #RadiologyAssistant