11 results
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Hypersensitivity ... Miliary TB: random ... #Clinical #Radiology ... #HRCT #CTChest ... Nodular #Pattern #Comparison
The distribution of nodules shown on HRCT is the most important factor in making an accurate
nodules shown on HRCT ... Random refers to ... peribronchovascular interstitium ... Radiology #Pulmonary #HRCT ... Perilymphatic #Comparison
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
diagnosis of chronic hypersensitivity ... pneumonitis; HRCT ... tomography; UIP = usual interstitial ... #hypersensitivity ... pulmonary #diagnosis #algorithm
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
- Look
Algorithm for nodular ... pattern The algorithm ... perilymphatic, random ... bronchovascular interstitium ... Radiology #Pulmonary #HRCT
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
Hypersensitivity ... Miliary TB: random ... Hypersensitivity ... #Clinical #Diagnosis ... #Differential #Comparison
High Attenuation pattern (2) 
1. Non specific interstitial pneumonitis (NSIP): ground glass with traction bronchiectasis, no
Non specific interstitial ... #Clinical #Radiology ... #HRCT #CTChest ... HighAttenuation #Pattern #Comparison
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
BOOP • Type of interstitial ... malignancy and other interstitial ... Organizing Pneumonia - Clinical ... , cavities • HRCT ... pneumonia’s, Hypersensitivity
On the left two different patients with similarl HRCT findings.
The left one is a smoker with
with similarl HRCT ... the right has hypersensitivity ... #Clinical #Radiology ... CTChest #RBILD #Comparison
Differential diagnosis of TB.
Primary TB: Acute bacterial pneumonia
Secondary TB: Sarcoidosis, Silicosis, Pneumoconiosis
Endobronchial spread of TB: Bronchopneumonia,
Bronchopneumonia, Hypersensitivity ... nodules have a random ... #Clinical #Diagnosis ... CTChest #MiliaryTB #Comparison
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
incidental finding in HRCT ... peribronchovascular interstitium ... #Clinical #Radiology ... #HRCT #CTChest ... Reticular #Pattern #Comparison