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Hydatiform mole with coexisting live fetus in dichorionic twin gestation
1Department of Obstetrics and Gynaecology, All India Institute of Medical Sciences, New Delhi 110029, India.
European Journal of Obstetrics, Gynecology, and Reproductive Biology
|February 13, 2001
Summary
A rare quadruplet pregnancy resulted in two healthy fetuses and two complete hydatidiform moles. This case highlights a complex pregnancy outcome with potential for both fetal development and molar disease.
Area of Science:
- Reproductive Medicine
- Maternal-Fetal Medicine
- Genetics
Background:
- Dichorionic twin pregnancies are common, but the coexistence of viable fetuses and molar tissue is exceptionally rare.
- Hydatidiform moles typically arise from abnormal fertilization events, usually resulting in non-viable pregnancies.
Observation:
- A 29-year-old patient presented with a dichorionic twin pregnancy diagnosed at 12 weeks.
- Persistent vaginal bleeding at 16 weeks revealed molar placenta alongside viable fetuses in both gestational sacs.
- The pregnancy was managed expectantly until spontaneous abortion at 21 weeks.
Findings:
- Karyotype analysis confirmed male (46XY) and female (46XX) fetuses.
- Histopathology and DNA flow cytometry revealed complete moles with a diploid chromosomal pattern.
- The clinical presentation suggests an initial quadruplet pregnancy with two normal embryos and two that degenerated into complete moles.
Implications:
- This case presents a unique instance of superfetation or differential embryonic development within a single pregnancy.
- It underscores the importance of thorough histopathological examination in cases of abnormal placentation, even with viable fetuses.
- Further research into the mechanisms underlying such complex pregnancy outcomes is warranted.