20 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
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... next to pleura and ... Clinical #Radiology #HRCT ... #CTChest #Nodular ... #Pattern #Comparison
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
and the nodular ... the reticular pattern ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest ... #Differential #
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... and also nodules ... Diagnosis #Radiology #Pulmonary ... #HRCT #CTChest ... #Nodules #Differential
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... on HRCT Most of ... reticular, nodular ... Diagnosis #Radiology #Pulmonary ... #Differential #
The distribution of nodules shown on HRCT is the most important factor in making an accurate
pattern. ... Diagnosis #Radiology #Pulmonary ... #Nodular #Pattern ... Perilymphatic #Comparison ... #Diagram #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
pattern. 1. ... Diagnosis #Radiology #Pulmonary ... #CTChest #Nodular ... #Differential # ... Comparison #Table
Tree-in-bud
In centrilobular nodules the recognition of 'tree-in-bud' is of value for narrowing the differential diagnosis.
Tree-in-bud describes
centrilobular nodules ... narrowing the differential ... Pathophys #Radiology #Pulmonary ... #CTChest #TreeInBud ... #Diagram #RadiologyAssistant
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... Cardiogenic pulmonary ... gravitational and ... #CTChest #Reticular ... #Pattern #Comparison
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... has a limited differential ... in interstitial pulmonary ... Nodular or irregular ... #HRCT #CTChest