32 results
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
and areas of low attenuation ... The HRCT shows a ... and secondry nodules ... #Clinical #Radiology ... #CXR #CTChest #
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
decreased lung attenuation ... diseases with a low attenuation ... 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
Perilymphatic nodules ... in differential diagnosis ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #Perilymphatic
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... centrilobular nodules ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #CTChest #NodularPattern
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... patterns: reticular, nodular ... , high and low attenuation ... #Diagnosis #Radiology ... #Pulmonary #CXR
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
HR-pattern: reticular nodular ... high attenuation ... bronchiectasis) #Diagnosis ... #Radiology #Pulmonary ... #HRCT #CTChest
Mosaic Attenuation on Chest CT
 • Variable attenuation seen on a chest CT in a lobular
Mosaic Attenuation ... CT in a lobular ... #CT #Lung #Pulmonary ... #diagnosis #radiology ... #clinical
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
- Differential Diagnosis ... Nodular: • Random ... Honeycombing: Idiopathic Pulmonary ... #Differential #Diagnosis ... #pulmonary #radiology
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
diseases with a nodular ... centrilobular nodules ... #Clinical #Diagnosis ... #Radiology #Pulmonary ... #CTChest #Nodular
This patient presented with acute dyspnoe and a normal chest film (not shown).
The HRCT at presentation
(left) shows lobular ... of ground glass attenuation ... A control HRCT ten ... #Clinical #Radiology ... #CTChest #Hypersensitivity