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Upper lung zone preference is seen in:
- Inhaled particles: pneumoconiosis (silica or coal)
- Smoking related diseases
seen in: - UIP - Aspiration ... edema #Diagnosis #Radiology ... #Upper #Lower #RadiologyAssistant
Left Atrium
 - The upper posterior border of the heart is formed by the left atrium.
Left Atrium - The ... formed by the left atrium ... #Anatomy #Radiology ... #CXR #Lateral #Atrium ... Cardiac #Chambers #RadiologyAssistant
On a chest film only the outer contours of the heart are seen.
In many cases we
Left Atrium - Most ... . - Left atrial ... and an obtuse angle ... #Anatomy #Radiology ... Cardiac #Chambers #RadiologyAssistant
The 4 Variants of Sinus Arrhythmia
Phasic Sinus Arrhythmia:
 • The rate increases with respiration and decreases
increases with respiration ... decreases with expiration ... Wandering Atrial ... Sinus #Arrhythmia #cardiology
Cannon A Waves on Neck Examination

Cannon a waves! Notice that it occurs randomly, not predictably w/
cardiac cycle or respiration ... for DDI and an atrial ... Clinical #Video #Cardiology
Here another patient with free abdominal air.
Notice the very thin regular line which is the diaphragm
atelectasis due to poor inspiration ... #Clinical #Radiology ... FreeAir #Diaphragm #RadiologyAssistant
Here we have a prior CXR of this patient.
The AP-film shows a right paratracheal mass.
The azygoesophageal
border of the right atrium ... the result of aspiration ... #Clinical #Radiology ... Dilated #Esophagus #Aspiration ... #RadiologyAssistant
Atrial Flutter on Neck Examination

If you can dx this rhythm, you are born before 1960. 
Early
Atrial Flutter on ... On inspiration, ... flutter waves on inspiration ... JamesOngMD #Atrial ... Clinical #Video #Cardiology
Stage I - Redistribution
In a normal chest film with the patient standing erect, the pulmonary vessels
taken in full inspiration ... #Clinical #Radiology ... Redistribution #RadiologyAssistant
Pleural effusion is not always visible as a meniscus in the costophrenic angle. 
A subpulmonic effusion
the costophrenic angle ... #Clinical #Radiology ... SubpulmonicEffusion #RadiologyAssistant