28 results
The distribution of nodules shown on HRCT is the most important factor in making an accurate
nodules shown on HRCT ... perilymphatic, centrilobular ... Centrilobular distribution ... Radiology #Pulmonary #HRCT ... #NodularPattern
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
perilymphatic, random and centrilobular ... distribution is likely centrilobular ... Radiology #Pulmonary #HRCT ... #CTChest #NodularPattern
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pneumonitis: ill defined centrilobular ... Hypersensitivity pneumonitis: centrilobular ... bronchiolitis: ill defined centrilobular ... Nodular #Pattern #NodularPattern ... Differential #Comparison #Table
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
pneumonitis: ill defined centrilobular ... Hypersensitivity pneumonitis: centrilobular ... Clinical #Radiology #HRCT ... Pattern #Comparison #Table
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Centrilobular emphysema ... Notice the centrilobular ... Clinical #Radiology #HRCT ... Pattern #Comparison #Table
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
related diseases (centrilobular ... Radiology #Pulmonary #HRCT ... #Differential #Table
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Centrilobular emphysema ... Clinical #Radiology #HRCT ... Pattern #Comparison #Table
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
Radiology #Pulmonary #HRCT ... #Differential #Table
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis on HRCT ... disease comes from HRCT ... On HRCT there are ... low attenuation (table
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... , NSIP, DIP. - Centrilobular