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Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... Peripheral distribution ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #RadiologyAssistant
Diagnostic Algorithm for Dizziness and Vertigo
Peripheral Vertigo:
 • Attacks: Sudden, severe, can last anywhere from seconds
Diagnostic Algorithm ... Peripheral Vertigo ... Attacks: Gradual, mild ... Mild persistent ... #differential #diagnosis
Characteristics of Peripheral and Central Vertigo
PERIPHERAL VERTIGO
 • Onset: Sudden
 • Intensity: Severe initially, often decreasing
Characteristics of Peripheral ... PERIPHERAL VERTIGO ... • Intensity: Mild ... Findings: Rarely #Peripheral ... #diagnosis #findings
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... - Aspiration - Pulmonary ... edema #Diagnosis ... #Radiology #Pulmonary ... #Upper #Lower #RadiologyAssistant
Batwing
A bilateral perihilar distribution of consolidation is also called a Batwing distribution.
The sparing of the periphery
sparing of the periphery ... most typical of pulmonary ... Reverse Batwing Peripheral ... #Diagnosis #Radiology ... #Differential #RadiologyAssistant
Here are the most common examples of these four patterns on a chest x-ray (click image
consolidation - Multifocal ill-defined ... mass - Solitary Pulmonary ... Masses Atelectasis #Diagnosis ... Consolidation #Patterns #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
Differential diagnosis ... the differential diagnosis ... perihilar (batwing) or peripheral ... #Pulmonary #CXR ... Differential #Table #RadiologyAssistant
Notice that there are multiple densities in both lungs.
The larger ones are ill-defined and maybe there
There is a peripheral ... the differential diagnosis ... Biopsy revealed the diagnosis ... Radiology #CXR #Peripheral ... OrganizingPneumonia #BOOP #RadiologyAssistant
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
the differential diagnosis ... identified in the lung periphery ... #Diagnosis #Pathophys ... #Radiology #Pulmonary ... TreeInBud #Diagram #RadiologyAssistant
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
present as multiple ill-defined ... can suggest the diagnosis ... demonstrating wegde-shaped peripheral ... film shows two ill-defined ... SepticEmboli #Cavity #RadiologyAssistant