Pleural EffusionCreated OnMay 4, 2020Last Updated OnMay 4, 2020byadmin You are here: Main Radiology Pleural Effusion < All Topics Table of Contents Features include: Blunting of the costophrenic angle Blunting of the cardiophrenic angle Fluid within the horizontal or oblique fissures (appears white) Meniscus sign – a crescent shaped slope. (note: it may not be visible if a hydropneumothorax is present) Mediastinal shift occurs when there is large volume of effusion. The shift is away from the effusion (note: if coexistent collapse dominates then mediastinal shift may occur towards the effusion) Meniscus sign – concave area at the top of the uniform white opacity at left mid – lower zone. The pleural effusion is evident by the loss of left heart border, costophrenic angle and hemidiaphragm. Slight blunting of the right costophrenic angle suggest minimal effusion. Large Pleural Effusion Again, opacification of the left lower hemithorax due to a pleural effusion Notice the mediastinal shift to the right evident by the tracheal shift. Loculated Pleural Effusion There is loss of left costophrenic angle with a wide pleural based dome shaped opacity projecting into the lung. *Some of the image photo is taken from web, we do not own this, it’s for knowledge sharing purpose.
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