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The fourth pattern includes abnormalities that result in decreased lung attenuation or air-filled lesions.
These include:
- Emphysema
-
The fourth pattern ... low attenuation pattern ... #Diagnosis #Radiology ... #Pulmonary #CTChest ... Differential #Diagram #Comparison
On the left some diseases with a nodular pattern.
1. Hypersensitivity pneumonitis: ill defined centrilobular nodules.
2. Miliary
with a nodular pattern ... Clinical #Diagnosis #Radiology ... #Pulmonary #CTChest ... #Nodular #Pattern ... #Differential #Comparison
The idiopathic interstitial pneumonias (IIPs) comprise a heterogenous group of disorders. 
They represent fundamental responses of
on the left in order ... have specific patterns ... realise, that these patterns ... #Diagnosis #Radiology ... #Pulmonary #CTChest
Progressive Massive Fibrosis aka Complicated Silicosis.
Silicosis is a fibrotic lung disease caused by inhalation of crystalline
typical eggshell pattern ... Silicosis #clinical #radiology ... #CXR #Chest #XRay ... #labeled #pulmonary
Differential diagnosis of Lymphangitic Carcinomatosis. 
On the left multiple diseases showing septal thickening:
1. Lymphangitic carcinomatosis: irregular
Cardiogenic pulmonary ... demarcated secondary lobeles ... #Clinical #Radiology ... #Pulmonary #CTChest ... #Differential #Comparison
McConnell's Sign on POCUS Echocardiogram - PSAX
Positive McConnell's Sign (hypokinetic RV with apical sparing) indicates acute
Sign on POCUS Echocardiogram ... highly specific for pulmonary ... infarct & acute chest ... PSAX #clinical #cardiology ... #labeled
Reticular pattern 
1. Lymphangitic carcinomatosis: irregular septal thickening, usually focal or unilateral 50% adenopathy', known carcinoma.
2.
Reticular pattern ... Cardiogenic pulmonary ... #Clinical #Radiology ... #HRCT #CTChest ... #Comparison #Table
McConnell's sign on POCUS Echocardiogram

An otherwise healthy male presents with pleuritic chest pain.  
Hypokinetic RV
sign on POCUS Echocardiogram ... with pleuritic chest ... likely from a pulmonary ... #clinical #cardiology ... #labeled
McConnell's Sign on POCUS Echocardiogram

2 patients w/ different diagnoses.  Both demonstrate an apical 4-chamber view
Sign on POCUS Echocardiogram ... strain related to pulmonary ... infarct or acute chest ... #clinical #cardiology ... #a4c #labeled