26 results
The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
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on the basis of HRCT ... Diagnosis #Radiology #Pulmonary ... #CTChest #LowAttenuation ... Differential #Diagram #Comparison ... Emphysema #SignetRing #RadiologyAssistant
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
The HRCT shows a ... mosaic pattern ... Additionally there is septal ... Radiology #CXR #CTChest ... Chronic #Fibrosis #RadiologyAssistant
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
and the nodular septal ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest ... #Differential #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
Thickening of the lung ... with interstitial lung ... in interstitial pulmonary ... #HRCT #CTChest ... #Differential #RadiologyAssistant
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Cardiogenic pulmonary ... incidental finding in HRCT ... #CTChest #Reticular ... #Pattern #Comparison ... #Table #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
in interstitial lung ... On HRCT there are ... is interstitial lung ... Diagnosis #Radiology #Pulmonary ... #Differential #RadiologyAssistant
Mosaic attenuation
The term 'mosaic attenuation' is used to describe density differences between affected and non-affected lung
Mosaic attenuation ... The term 'mosaic ... Diagnosis #Radiology #Pulmonary ... #CTChest #MosaicAttenuation ... #Differential #RadiologyAssistant
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
diseases showing septal ... Cardiogenic pulmonary ... #CTChest #LymphangiticCarcinomatosis ... #Differential #Comparison ... #Table #RadiologyAssistant
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
along interlobular septa ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest ... Differential #Algorithm #RadiologyAssistant
On the left a patient with ground glass pattern in a mosaic distribution.
The clue here is
glass pattern in a mosaic ... enlargement of pulmonary ... hyperperfused lung ... Clinical #Radiology #CTChest ... #RadiologyAssistant