15 results
Algorithm for nodular pattern
The algorithm to distinguish perilymphatic, random and centrilobular nodules is the following:
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Algorithm for nodular ... pattern The algorithm ... Radiology #Pulmonary #HRCT ... #CTChest #NodularPattern ... #Nodular #Pattern
Nodular pattern
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary TB: random nodules
3. Sarcoidosis: nodules with perilymphatic
Nodular pattern ... Hypersensitivity ... Hypersensitivity ... Clinical #Radiology #HRCT ... #Pattern #Comparison
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
diseases with a nodular ... pattern. 1. ... Hypersensitivity ... Hypersensitivity ... #Pattern #NodularPattern
The distribution of nodules shown on HRCT is the most important factor in making an accurate
shown on HRCT is ... pattern. ... Radiology #Pulmonary #HRCT ... #NodularPattern ... #Nodular #Pattern
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Organizing Pneumonia (COP ... consolidation and GG pattern ... irregular lines, nodular ... , cavities • HRCT ... interstitial pneumonia’s, Hypersensitivity
Chronic hypersensitivity pneumonitis
The key findings in chronic hypersensitivity pneumonitis are:
Mosaic pattern with areas of ground-glass atenuation
pneumonitis are: Mosaic pattern ... The HRCT shows a ... mosaic pattern ... hyperaerated secondary nodules ... and secondry nodules
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT Patterns ... Low Attenuation Nodular ... Pneumonia, COP, ... Sarcoidosis, NSIP, COP ... HighRes #Chest #CT #Patterns
Approach to the diagnosis of chronic hypersensitivity pneumonitis. 
*Consider additional test: bronchoscopy with bronchoalveolar lavage, transbronchial
diagnosis of chronic hypersensitivity ... cHP = chronic hypersensitivity ... pneumonitis; HRCT ... #hypersensitivity ... pulmonary #diagnosis #algorithm
On the left a patient with ground glass pattern in a mosaic distribution.
Some lobules are involved
with ground glass pattern ... Hypersensitivity ... centrilobular nodules ... density (acinar nodules ... are confluent, HRCT
Differential diagnosis of the reversed halo sign (RHS). AIA, angioinvasive aspergillosis; AIS, adenocarcinoma in situ; COP,
adenocarcinoma in situ; COP ... interstitial pneumonia; OP ... centrilobular nodules ... drug toxicity, hypersensitivity ... #Differential #Algorithm