10 results
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
the overlap in differential ... the reticular pattern ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Respiratory bronchiolitis ... Clinical #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Nodular #Pattern ... NodularPattern #Differential
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
centrilobular emphysema - Respiratory ... bronchiolitis (RB-ILD ... edema #Diagnosis #Radiology ... #Pulmonary #HRCT ... #ChestCT #Differential
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
pattern The algorithm ... are visible, the pattern ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Nodules #Differential
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... reticular, nodular ... #Diagnosis #Radiology ... #Pulmonary #CXR ... #Differential #
Ground-glass opacity
Ground-glass opacity (GGO) represents:
- Filling of the alveolar spaces with pus, edema, hemorrhage, inflammation or
resolution of the HRCT ... in ground glass pattern ... bronchiolitis #Diagnosis #Radiology ... #Pulmonary #CTChest ... #GroundGlass #Differential
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT Patterns ... - Differential ... Low Attenuation Nodular ... Hypersensitivity Pneumonitis, Respiratory ... #radiology
Basic Interpretation
A structured approach to interpretation of HRCT involves the following questions:
What is the dominant HR-pattern:
reticular
nodular
high
the dominant HR-pattern ... : reticular nodular ... bronchiectasis) #Diagnosis #Radiology ... #Pulmonary #HRCT ... Interpretation #Algorithm #ILD
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
with subtle HRCT-findings ... The dominant pattern ... there is a broad differential ... interpretion of the HRCT ... #Clinical #Radiology
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
cells results in a pattern ... in interstitial pulmonary ... Nodular or irregular ... #Diagnosis #Radiology ... #Pulmonary #HRCT