63 results
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
Perilymphatic nodules ... the overlap in differential ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #Differential #
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity pneumonitis: ill ... centrilobular nodules ... #Clinical #Radiology ... #HRCT #CTChest
Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
bronchiolitis (RB-ILD ... - Aspiration - Pulmonary ... edema #Diagnosis #Radiology ... #Pulmonary #HRCT ... #ChestCT #Differential
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 ... #Differential #
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity pneumonitis: ill ... bronchiolitis: ill ... Clinical #Diagnosis #Radiology ... #Pulmonary #CTChest ... NodularPattern #Differential
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
Consider additional test ... Consider additional test ... hypersensitivity pneumonitis; HRCT ... #pneumonitis #pulmonary ... algorithm #HP #ILD
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
Differential diagnosis ... patterns: reticular, nodular ... appreciate on a cest ... #Diagnosis #Radiology ... #Pulmonary #CXR
Central distribution is seen in sarcoidosis and cardiogenic pulmonary edema.
Peripheral distribution is mainly seen in cryptogenic
and cardiogenic pulmonary ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... #ChestCT #Differential
The distribution of nodules shown on HRCT is the most important factor in making an accurate
distribution of nodules ... shown on HRCT is ... diagnosis in the nodular ... #Diagnosis #Radiology ... #Pulmonary #HRCT
Here are the most common examples of these four patterns on a chest x-ray (click image
consolidation - Multifocal ill-defined ... opacities - Fine Nodular ... mass - Solitary Pulmonary ... Nodule - Multiple ... Diagnosis #Clinical #Radiology