Calcified yolk sac
Updates to Article Attributes
Body
was changed:
A calcified yolk sac has been described as a sign of intrauterine demise. The cause of yolk sac calcification in failed pregnanciesis is uncertain but is likely related to dystrophic calcification.
Radiographic features
Ultrasound
- abnormal increased echogenicity of the yolk sac with posterior acoustic shadowing and possibly comet tail artifact
Practical points
- indeterminate abnormal yolk sac abnormality that should not be considered alone for the diagnosis of failed early pregnancy
- follow-up ultrasonography at 7-14 days to assess the pregnancy for viability is generally appropriate
-<p>A <strong>calcified yolk sac</strong> has been described as a sign of intrauterine demise. The cause of <a href="/articles/yolk-sac">yolk sac </a>calcification in <a href="/articles/failed-early-pregnancy">failed pregnancies </a>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-artifact-3">comet tail artifact</a>- +<p>A <strong>calcified yolk sac</strong> has been described as a sign of <a title="Intrauterine death (IUD)" href="/articles/fetal-death-in-utero-1">intrauterine demise</a>. The cause of <a href="/articles/yolk-sac">yolk sac </a>calcification in <a href="/articles/failed-early-pregnancy">failed pregnancies</a> 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 <a title="Posterior acoustic shadowing" href="/articles/acoustic-shadowing">posterior acoustic shadowing</a> and possibly <a href="/articles/comet-tail-artifact-4">comet tail artifact</a>
-</ul><p> </p>- +</ul>