13 results
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 ... #HRCT #CTChest ... #Nodular #Pattern ... #Comparison #Table
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... and also nodules ... #Diagnosis #Radiology ... #Pulmonary #HRCT
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
Cryptogenic organizing ... fibrosis perihilar and ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
GG pattern, irregular ... lines, nodular ... , cavities • HRCT ... other processes Workup ... strep, HIV • CTD workup
Perilymphatic distribution
Perilymphatic nodules are most commonly seen in sarcoidosis.
They also occur in silicosis, coal-worker's pneumoconiosis and
pneumoconiosis and ... and the nodular ... the reticular pattern ... #Diagnosis #Radiology ... #Pulmonary #HRCT
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
disease comes from HRCT ... On HRCT there are ... reticular, nodular ... #Diagnosis #Radiology ... #Pulmonary #CXR
The distribution of nodules shown on HRCT is the most important factor in making an accurate
shown on HRCT is ... pattern. ... #Diagnosis #Radiology ... #Pulmonary #HRCT ... Perilymphatic #Comparison
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
have specific patterns ... morphologic findings on HRCT ... idiopathic or cryptogenic ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
in situ; COP, cryptogenic ... pneumonia; PZ, pulmonary ... #Diagnosis #Pulmonary ... #Radiology #RHS ... #Differential #Algorithm
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... Cardiogenic pulmonary ... gravitational and ... #Clinical #Radiology ... #Comparison #Table