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Ligamentum arteriosum calcification on paediatric postmortem computed tomography.

Natasha Davendralingam1,2, Susan C Shelmerdine3,4,5, J Ciaran Hutchinson6

  • 1Department of Clinical Radiology, Royal London Hospital, London, UK.

Pediatric Radiology
|October 7, 2020
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Summary

Ligamentum arteriosum calcification is common in children under 8 years old, particularly visible on postmortem CT scans. Recognizing this finding prevents unnecessary investigations during autopsy.

Keywords:
CalcificationChildrenComputed tomographyFrequencyImagingLigamentum arteriosumPostmortem

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Area of Science:

  • Forensic imaging
  • Pediatric radiology
  • Anatomical pathology

Background:

  • Ligamentum arteriosum calcification is a potentially normal finding in children.
  • The frequency of this condition in pediatric populations is not well-established.

Purpose of the Study:

  • To determine the frequency of ligamentum arteriosum calcification in children using postmortem imaging.
  • To compare the detection rates between postmortem CT and radiography.

Main Methods:

  • Retrospective review of pediatric postmortem CT and chest radiographs (2012-2018).
  • Two independent reviewers assessed calcification presence.
  • Descriptive statistical analysis of frequency, age, and gender associations.

Main Results:

  • Calcification detected in 30.5% of postmortem CTs vs. 1.6% of radiographs.
  • Highest frequency observed in children aged 1-7 years (53.6-66.7%).
  • No gender predilection; frequency decreased in older children, absent after 12 years.

Conclusions:

  • Ligamentum arteriosum calcification is a common postmortem finding in children under 8 years.
  • Postmortem CT is superior to radiography for identifying this calcification.
  • Awareness of this common finding aids radiologists in avoiding unnecessary autopsies.