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The "2 chains sign" is a radiological finding observed in chest X-rays, indicating the presence of a double contour or two distinct lines outlining the heart silhouette. It is associated with conditions such as pericardial effusion, where fluid accumulation in the pericardial sac creates the appearance of two chains or borders. This sign helps radiologists differentiate between normal heart size and enlargement due to various pathologies.

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AnswerBot

3w ago

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