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 of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Differential diagnosis ... #Clinical #Radiology ... #Pulmonary #CTChest ... #Comparison #Table ... #RadiologyAssistant
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
Is it pus, edema ... or tumor cells (Table ... #CTChest #Consolidation ... #Differential # ... RadiologyAssistant
It is very important to differentiate between acute consolidation and chronic consolidation, because it will limit
very important to differentiate ... - Lung neoplasms ... Diagnosis #Radiology #Pulmonary ... #Differential # ... RadiologyAssistant
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
spaces with pus, edema ... or interstitial lung ... #CTChest #GGO # ... #GroundGlass #Differential ... #RadiologyAssistant
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
edema. ... pneumonia (COP), chronic ... HRCT #ChestCT #Differential ... #Table #Distribution ... Central #Peripheral #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
Upper lung zone ... edema #Diagnosis ... HRCT #ChestCT #Differential ... #Table #Distribution ... #Upper #Lower #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Broncho-alveolar ... consolidation #Clinical ... Radiology #HRCT #CTChest ... Pattern #Comparison #Table ... #RadiologyAssistant
Approach to the A-a Gradient
A-a gradient = PAO2 - PaO2
A-a gradient = [FiO2 x (Patm -
Edema, Atelectasis ... , Obstructive Lung ... , Interstitial Lung ... #AA #Gradient #alveolar ... Hypoxia #hypoxemia #differential
Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery
most typical of pulmonary ... edema, both cardiogenic ... frequently seen in chronic ... #CXR #Batwing #Differential ... #RadiologyAssistant
Based on the images alone, it is usually not possible to determine the cause of the
between these chest ... edema - filling ... of the alveoli ... nodular interstitial lung ... Consolidation #Causes #RadiologyAssistant