29 results
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
attenuation or air-filled ... Lung cysts (LAM, LIP ... on the basis of HRCT ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Monod Sign on Chest CT
 • Air surrounding a fungal ball in a preexisting pulmonary cavity
CTAir surrounding ... cavity • DDx: ... #Monod #Sign #CT ... #Lung #Pulmonary ... #diagnosis #radiology
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... pneumonia and UIP ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #Table
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... the result of air ... bronchiolitis #Diagnosis ... #Radiology #Pulmonary ... #CTChest #GGO #
Cavitary Lesion with Air-Fluid Level on Chest XRay

70+ year old man with PMH of latent TB
with Air-Fluid Level ... on Chest XRay ... 70+ year old man ... ChestXRay #Clinical #Pulmonary ... #Radiology #AirFluidLevel
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 ... abutting the pleura, air-bronchograms ... #Clinical #Radiology ... #SepticEmboli #Cavity
Consolidation is synonymous with airspace disease.
When you think of the causes of consolidation, think of 'what
replacing the air ... or tumor cells (Table ... fibrosis as in UIP ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Air Bronchogram Sign on Chest CT
 • Patent airways surrounded by opacified lung
 • DDx: pna,
Air Bronchogram ... Sign on Chest CT ... edema, severe ILD ... #Lung #Pulmonary ... #diagnosis #radiology
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
listed in the table ... morphologic findings on HRCT ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... IdiopathicInterstitialPneumonia #ILD