114 results
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #Table
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern 1. ... #Clinical #Radiology ... #HRCT #CTChest ... Pattern #Comparison #Table
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
Attenuation pattern (2) 1. ... #Clinical #Radiology ... #HRCT #CTChest ... Pattern #Comparison #Table
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern(2) 1. ... #Clinical #Radiology ... #HRCT #CTChest ... Pattern #Comparison #Table
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Attenuation pattern 1. ... #Clinical #Radiology ... #HRCT #CTChest ... Pattern #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Attenuation pattern (2) 1. ... #Clinical #Radiology ... #HRCT #CTChest ... Pattern #Comparison #Table
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
- Aspiration - Pulmonary ... edema #Diagnosis ... #Radiology #Pulmonary ... #HRCT #ChestCT ... #Differential #Table
High Attenuation pattern 
1. Chronic eosinophilic pneumonia with peripheral areas of ground glass opacity.
2. Sarcoid end-stage
Attenuation pattern 1. ... consolidation #Clinical ... #Radiology #HRCT ... #CTChest #HighAttenuation ... Pattern #Comparison #Table
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
on the basis of HRCT ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
in differential diagnosis ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #Perilymphatic