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Updated: Aug 1, 2026

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Guide Wire Assisted Catheterization and Colored Dye Injection for Vascular Mapping of Monochorionic Twin Placentas
Published on: September 5, 2011
[2 cases of symmetrical double abnormality]
1Frauenklinik, Bezirkskrankenhauses, Frankfurt/O.
Summary
This report details two rare cases of conjoined twins with two heads and four arms, delivered at 37 and 32 weeks. The study explores potential causes and diagnostic challenges of these rare congenital malformations.
Area of Science:
- Medical Science
- Developmental Biology
- Clinical Case Reports
Background:
- Conjoined twinning is a rare phenomenon with complex etiology.
- Understanding the spectrum of conjoined twin malformations is crucial for diagnosis and management.
- Symmetric incomplete two-headed, four-handed conjoined twins represent a particularly rare subtype.
Observation:
- Two cases of conjoined twins are presented, exhibiting symmetric incomplete duplication of the cephalic and upper limb structures.
- The first twin set was delivered via caesarean section at 37 weeks gestation.
- The second twin set was delivered via forceps at 32 weeks gestation.
Findings:
- The cases highlight the variability in presentation and gestational age at delivery for this rare malformation.
- Discussion includes critical aspects of teratogenicity, the study of abnormal formations during embryonic development.
- Diagnostic challenges and considerations for such complex congenital anomalies are addressed.
Implications:
- These cases contribute to the limited literature on rare conjoined twin presentations.
- Further research into the teratogenic factors influencing conjoined twinning is warranted.
- Improved diagnostic strategies may aid in better management and counseling for affected families.
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