Fluid outside the lung and in the thorax that
layers out in an chest, and blunts the costo-phrenic angles: meniscus.
Supine view of an effusion will spread it throughout that side of thorax giving haze like
appearance to the whole lung. Get a if possible effusion.
Can be due to a:
, due to an increased hydrostatic oncotic pressure
intravascularly.
, due to a leak of proteinaceous material
across an inflamed pleura.
Non-infected effusion in thorax, usually secondary to pneumonia.
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