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Partial placenta membranacea.

B S Wilkins1, G Batcup, P S Vinall

  • 1Department of Pathology, General Infirmary, Leeds.

British Journal of Obstetrics and Gynaecology
|July 1, 1991
PubMed
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Partial placenta membranacea complicates pregnancies, often leading to bleeding, miscarriage, or preterm birth. Ultrasound diagnosis can be challenging, and chorioamnionitis may contribute to labor.

Area of Science:

  • Obstetrics and Gynecology
  • Perinatal Medicine
  • Fetal Pathology

Background:

  • Partial placenta membranacea is a rare placental anomaly.
  • It is associated with adverse pregnancy outcomes such as antepartum hemorrhage, miscarriage, and preterm delivery.
  • The condition may be more common than complete forms but is less frequently reported.

Purpose of the Study:

  • To describe the clinical presentation and outcomes of pregnancies complicated by partial placenta membranacea.
  • To highlight diagnostic challenges associated with this condition.
  • To investigate potential contributing factors and fetal effects.

Main Methods:

  • Retrospective case series of seven pregnancies over a 2-year period.
  • Review of clinical data, ultrasound findings, and histopathological examination of placentas.

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  • Assessment of fetal outcomes and maternal factors.

    • Main Results:

    • Seven cases of partial placenta membranacea were identified.
    • Associated complications included recurrent antepartum hemorrhage, miscarriage, and preterm delivery.
    • Histological evidence of chorioamnionitis was present in five cases, potentially precipitating labor.
    • Three fetuses exhibited pulmonary inflammatory changes.
    • Ultrasound diagnosis was noted to be difficult.
    • No maternal predisposing factors were identified.

    Conclusions:

    • Partial placenta membranacea presents significant risks to pregnancy, including bleeding and preterm birth.
    • Chorioamnionitis may play a role in the onset of labor in these cases.
    • Improved diagnostic methods, particularly ultrasound, are needed.
    • Further research into etiology and management is warranted.