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The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
The idiopathic interstitial ... listed in the table ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... IdiopathicInterstitialPneumonia #ILD
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
Thickening of the interstitium ... , NSIP, DIP. - Centrilobular ... bronchiolitis #Diagnosis ... #Radiology #Pulmonary ... #CTChest #GGO #
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... is seen in: - UIP ... edema #Diagnosis ... #Radiology #Pulmonary ... #Differential #Table
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 ... mass - Solitary Pulmonary ... Masses Atelectasis #Diagnosis ... #Clinical #Radiology
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
CT • Air surrounding ... cavity • DDx: ... #Monod #Sign #CT ... #Lung #Pulmonary ... #diagnosis #radiology
Usual Interstitial Pneumonia (UIP) pattern on Chest CT
75 M with progressive dyspnea. Typical usual interstitial pneumonia
pattern on Chest ... CT 75 M with progressive ... Idiopathic pulmonary ... #IPF #ChestCT #radiology ... #pulmonary #clinical
Septic emboli
Septic emboli usually present as multiple ill-defined nodules.
In about 50% cavitation is seen.
CT demonstrates more
CT demonstrates ... can suggest the diagnosis ... On the CT cavitation ... #Clinical #Radiology ... #SepticEmboli #Cavity
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... low attenuation (table ... in many cases UIP ... #Diagnosis #Radiology ... #Pulmonary #CXR
#radiology #ctchest #differential

Differential Diagnosis of Ground-glass Opacity.

Some abbreviations
HP: Hypersensitive pneumonitis
DIP: Desquamative interstitial pneumonia
PAP: Pulmonary alveolar proteinosis
MIA:
#radiology #ctchest ... Differential Diagnosis ... Hypersensitive pneumonitis DIP ... : Desquamative interstitial ... pneumonia PAP: Pulmonary
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
or tumor cells (Table ... fibrosis as in UIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest