24 results
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
Central distribution ... Peripheral distribution ... Radiology #Pulmonary #HRCT ... Differential #Table #Distribution ... Central #Peripheral #RadiologyAssistant
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... Radiology #Pulmonary #HRCT ... Differential #Table #Distribution ... #Upper #Lower #RadiologyAssistant
Central Distribution, Febrile / Ill:
 - Viral Exanthem 
 - Lyme Disease (erythema migrans) 
Central Distribution,
Central Distribution ... migrans) Central Distribution ... ) Peripheral Distribution ... , flexor distribution ... Papules #Rash #Algorithm
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity pneumonitis: ill ... perilymphatic distribution ... Clinical #Radiology #HRCT ... Comparison #Table #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
in number, the distribution ... periplymphatic distribution ... likely a random distribution ... Radiology #Pulmonary #HRCT ... #RadiologyAssistant
The distribution of nodules shown on HRCT is the most important factor in making an accurate
The distribution ... nodules shown on HRCT ... Perilymphatic distribution ... Random distribution ... Comparison #Diagram #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
perilymphatic distribution ... Clinical #Radiology #HRCT ... Comparison #Table #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
Perilymphatic distribution ... Radiology #Pulmonary #HRCT ... #Differential #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity pneumonitis: ill ... perilymphatic distribution ... perilymphatic distribution ... bronchiolitis: ill ... Comparison #Table #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
in a mid zone distribution ... The HRCT shows a ... Chronic #Fibrosis #RadiologyAssistant