Cardiothoracic Imaging
Contents Anatomy Techniques Findings Cases References


Image finding: Loss of cardiac border

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Follow-up radiograph


Pneumonic infiltration of the lingula increases the density lung immediately adjacent to the left cardiac border. The presence of two areas of similar soft tissue density results in a loss of the conventional sharp boundary to the heart. The radiographic appearance of a sharp boundary at the left cardiac border would still be present if the lung density were located posterior to the heart, say in the left lower lobe.


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Copyright 2004, Yale University School of Medicine. All rights reserved.
December 18, 2004 (PL)
version b.003