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Here are the most common examples of these four patterns on a chest x-ray (click image
patterns on a chest x-ray ... Consolidation - Lobar ... mass - Solitary Pulmonary ... Nodule - Multiple Masses ... Consolidation #Patterns #RadiologyAssistant
Based on the images alone, it is usually not possible to determine the cause of the
determine the cause ... findings. ... filling of the alveoli ... this is nodular interstitial ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
about imaging findings ... low attenuation (table ... findings. ... Diagnosis #Radiology #Pulmonary ... #Differential #RadiologyAssistant
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
The idiopathic interstitial ... indicates unknown cause ... listed in the table ... Diagnosis #Radiology #Pulmonary ... #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
diagnosis The table ... content of the alveoli ... pneumonia caused ... Diagnosis #Radiology #Pulmonary ... #RadiologyAssistant
Septal thickening
Thickening of the lung interstitium by fluid, fibrous tissue, or infiltration by cells results in
a predominant finding ... differential diagnosis (Table ... pulmonary edema ... or lymphoma and alveolar ... #Differential #RadiologyAssistant
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
edema: incidental finding ... peribronchovascular interstitium ... Alveolar proteinosis ... Pattern #Comparison #Table ... #RadiologyAssistant
Lung Infections in HIV - Differential Diagnosis Framework

Disease by CD4 Count:
Any CD4 Count:
 • Mycobacterium tuberculosis,
and dyspnea • Lobar ... phagocytic function of alveolar ... factor • May cause ... fever, rales, interstitial ... Infections #HIV #AIDS #pulmonary
Congestive heart failure (CHF) is the result of insufficient output because of cardiac failure, high resistance
fluid into the interstitium ... finally into the alveoli ... disease and causes ... CXR #Features #Findings ... #Diagram #RadiologyAssistant