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Here are the most common examples of these four patterns on a chest x-ray (click image
on a chest x-ray ... Consolidation - Lobar ... mass - Solitary Pulmonary ... Masses Atelectasis #Diagnosis ... Clinical #Radiology #CXR
Cryptogenic Organizing Pneumonia (COP)

Cryptogenic Organizing Pneumonia Overview:
 • Idiopathic form of organizing pneumonia
 • formerly BOOP
Organizing Pneumonia (COP ... - Imaging: • CXR ... consolidation and GG pattern ... Anti-dsDNA, ANCA COP ... #ILD #diagnosis
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
to look at the pattern ... organizing pneumonia (OP ... OP is organizing ... called cryptogenic (COP ... #Pulmonary #CXR
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... Lymphangitic Carcinoma, Interstitial ... Hypersensitivity Pneumonia, COP ... Sarcoidosis, NSIP, COP ... #CT #Patterns #
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
have specific patterns ... of NSIP, UIP, OP ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... IdiopathicInterstitialPneumonia #ILD
Pulmonary Infections in HIV-AIDS
Bacterial: 
 • No organism identified, Strep pneumoniae, H. influenzae, S.aureus, Streptococcus Grp
heart failure, COPD ... Evaluation: Imaging (CXR ... +/- High res CT ... Infections #HIVAIDS #workup ... #diagnosis #evaluation
Based on the images alone, it is usually not possible to determine the cause of the
between these chest ... Organizing pneumonia (OP ... this is nodular interstitial ... #Clinical #Diagnosis ... #Radiology #CXR
On the left a smoker with RB-ILD with subtle HRCT-findings.
The dominant pattern is ground glass opacification.
Additional
The dominant pattern ... these non-specific CT ... broad differential diagnosis ... would be on top ... Clinical #Radiology #CTChest
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
- Differential Diagnosis ... • Pleuritic CP ... • CT: Halo sign ... fever, rales, interstitial ... Infections #HIV #AIDS #pulmonary