Left atrial enlargement chest x-ray

Chest X-Ray
Chest x-ray findings of left atrial enlargement are:
 * Double density sign: Occur when the right side of the left atrium pushes behind the right atrial border, appearing as a double density. If large enough it can actually reach beyond the border of the right atrium.
 * Convex left atria appendage: usually reflect prior rheumatic heart disease
 * Splaying of the carina
 * Posterior displacement of the left main stem bronchus on lateral radiograph
 * Superior displacement of the left main stem bronchus on frontal view
 * Posterior displacement of a barium filled oesophagus or nasogastric tube

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