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Mediastinal masses are discussed in more detail in Mediastinal masses.
Here is just a brief overview. #Diagnosis
Mediastinal masses ... masses. ... #Differential #Table ... #Anterior #Middle ... #Posterior #RadiologyAssistant
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern( ... a patient with active ... CTChest #Nodular #Pattern ... #Comparison #Table ... #RadiologyAssistant
Differential diagnosis on HRCT
Most of our knowledge about imaging findings in interstitial lung disease comes from
there are four patterns ... low attenuation (table ... The cystic pattern ... seen and in many cases ... #Differential #RadiologyAssistant
The table on the left is the overall table for mediastinal masses.
In the next paragraphs we
The table on the ... for mediastinal ... Pulmonary #Radiology #Mediastinal ... #Anterior #Middle ... #Posterior #RadiologyAssistant
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... a patient with active ... CTChest #Nodular #Pattern ... Differential #Comparison #Table ... #RadiologyAssistant
Differential diagnosis
The table summarizes the most common diseases, that present with consolidation.
Chronic diseases are indicated in
diagnosis The table ... to look at the pattern ... more than one pattern ... lobar pneumonia caused ... #RadiologyAssistant
Causes of Metabolic Alkalosis: Differential Diagnosis
ECF volume contracted: urine chloride concentration <20 meq/L
 • Gastric alkalosis:
Causes of Metabolic ... ectopic ACTH) • Exogenous ... dehydrogenase activity ... deficiency • Liddle ... loop diuretics actively
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
indicates unknown cause ... listed in the table ... have specific patterns ... realise, that these patterns ... ILD #Findings #RadiologyAssistant
Sarcoidosis
On a CXR sarcoidosis usually first presents with hilar and mediastinal lymphadenopathy (example).
Parenchymal disease can present
with hilar and mediastinal ... consolidation or even as masses ... Here a typical case ... #Interstitial #Pattern ... #Sarcoidosis #RadiologyAssistant
Azygoesophageal recess
The most important mediastinal line to look for is the azygoesophageal line, which borders the
most important mediastinal ... The causes of displacement ... summarized in the table ... #Differential #RadiologyAssistant