Calcified yolk sac
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Acalcified yolk sac has been described as a sign of earlylongstanding intrauterine demise. The cause of yolk sac calcification in failed pregnancies is uncertain, but is likely related to dystrophic calcification.
Radiographic features
Ultrasound
- abnormal increased echogenicity of the yolk sac with posterior acoustic shadowing and possiblycomet tail artifact
-<p>A <strong>calcified yolk sac</strong> has been described as a sign of early intrauterine demise. The cause of yolk sac calcification in failed pregnancies is uncertain, but is likely related to dystrophic calcification.</p><h4>Radiographic features</h4><h5>Ultrasound</h5><ul><li>abnormal increased echogenicity of the yolk sac with posterior acoustic shadowing and possibly <a href="/articles/comet-tail-artefact">comet tail artifact</a>- +<p>A <strong>calcified yolk sac</strong> has been described as a sign of longstanding intrauterine demise. The cause of yolk sac calcification in failed pregnancies is uncertain, but is likely related to dystrophic calcification.</p><h4>Radiographic features</h4><h5>Ultrasound</h5><ul><li>abnormal increased echogenicity of the yolk sac with posterior acoustic shadowing and possibly <a href="/articles/comet-tail-artefact">comet tail artifact</a>
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