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Related Experiment Videos

Monochorionic diamniotic minimally conjoined twins: a case report.

P J Weston1, E J Ives, R L Honore

  • 1Department of Pediatrics, University of Alberta, Edmonton, Canada.

American Journal of Medical Genetics
|December 1, 1990
PubMed
Summary

This study details the second reported case of conjoined twins (MC/DA), highlighting minimal, primarily external conjunction with a shared umbilical hernia and a unique ileal connection. Gastrointestinal and musculoskeletal anomalies were noted in both twins.

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Area of Science:

  • Reproductive Medicine
  • Developmental Biology
  • Clinical Case Reports

Background:

  • Monochorionic diamniotic (MC/DA) twins share a placenta and amniotic sac, increasing the risk of congenital anomalies.
  • Conjoined twinning, a rare complication of MC/DA gestations, results from incomplete separation of monozygotic embryos.
  • Understanding the spectrum of conjoined twinning is crucial for prenatal diagnosis and management.

Observation:

  • Presents the second documented case of MC/DA conjoined twins with minimal, predominantly extrafetal conjunction at the periumbilical ventral region.
  • The omphalopagus twins were attached via a single forked umbilical cord and shared an umbilical hernia containing the ileum of one twin.
  • A unique midileal conjunction with side-to-side fistulization was observed within the abdomen of the other twin.

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Findings:

  • Both twins exhibited gastrointestinal and musculoskeletal anomalies.
  • Twin A presented with severe amyoplasia and arthrogryposis multiplex.
  • The conjunction involved a shared umbilical hernia and a rare form of internal ileal fusion.

Implications:

  • This case expands the understanding of the morphological variations in conjoined twinning.
  • Further research into the specific mechanisms of incomplete embryonic separation is warranted.
  • Highlights the importance of detailed prenatal imaging for identifying complex congenital anomalies in MC/DA twins.