18 results
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
effusion; sometimes pneumothorax ... Centrilobular emphysema ... low attenuation areas ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Chronic eosinophilic ... end-stage with massive fibrosis ... Chronic eosinophilic ... Radiology #HRCT #CTChest ... Comparison #Table #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
Mosaic pattern with areas ... atenuation and areas ... Fibrosis and parenchymal ... Radiology #CXR #CTChest ... #Fibrosis #RadiologyAssistant
UIP with honeycombing (left) and chronic HP (right)
Differential diagnosis of Hypersensitivity Pneumonitis.
Subacute stage:
- RB-ILD: seen in
centrilobular emphysema ... In chronic HP fibrotic ... throughout the whole lung ... Diagnosis #Radiology #CTChest ... #Mimic #ILD #RadiologyAssistant
Paraseptal emphysema is localized near fissures and pleura and is frequently associated with bullae formation (area
Paraseptal emphysema ... to spontaneous pneumothorax ... compression of adjacent lung ... Clinical #Radiology #CTChest ... ParaseptalEmphysema #RadiologyAssistant
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the surrounding lung ... with end-stage fibrosis ... Diagnosis #Radiology #CTChest ... #Cavity #Cyst #Emphysema ... #Comparison #RadiologyAssistant
Emphysema, when it is severe, can mimick Langerhans cell histiosytosis.
When it extends beyond the centrilobular area
Emphysema, when ... LCH, but also areas ... bronchiolitis and even fibrosis ... Clinical #Radiology #CTChest ... #Emphysema #RadiologyAssistant
Palpable Skin Crepitus on Physical Exam

Notice these air bubbles under the skin. An 86-year-old woman with
complicated by pneumothorax ... insertion of a chest ... pneumoretroperitoneum, and pneumothorax ... the head, neck, chest ... under the skin as long
On the left a typical case of panlobular emphysema.
There is uniform destruction of the underlying architecture
to widespread areas ... in the affected lung ... appearance of extensive lung ... Clinical #Radiology #CTChest ... PanlobularEmphysema #RadiologyAssistant
Upper Lobe Lung Diseases - STAR CHASERS Mnemonic

S - Silicosis
T - Tuberculosis
A - Ankylosing Spondylitis
R -
Radiation C - Cystic Fibrosis ... caused by a rigid chest ... Centrilobular emphysema ... clearance: - Cystic Fibrosis ... aspergillosis - Chronic