intertwin membrane

The intertwin membrane refers to a membraneous separation between two fetuses in a twin pregnancy. Depending on the chorionicity and amnionicity, the membrane may have a number of layers

• di-chorionic di-amniotic (DCDA) pregnancy
  • composed of two chorionic and two amniotic layers
  • usually has a thick (often taken as >2 mm ) inter-twin membrane
  • more reflective
  • may demonstrate the twin-peak sign at its margin
• mono-chorionic di-amniotic (MDCA) pregnancy
  • composed of two amniotic layers only
  • usually has a thin (often taken as <2 mm inter-twin membrane
  • less reflective
  • may demonstrate the T sign at its margin
• mono-chorionic monoamniotic (MCMA) pregnancy
  • no intertwin membrane 

See also

• inter-twin membrane folding

Siehe auch:

• Zwillingsschwangerschaft
• twin-peak sign
• t sign
• monochoriale-monoamniote Zwillingsschwangerschaft
• dichorionic - diamniotic
• Siamesische Zwillinge
• inter twin membrane folding
• mono-chorionic di-amniotic (MDCA) pregnancy

und weiter:

• dichorionic diamniotic twin pregnancy
• sonographic values in obstetrics and gynaecology
• MCDA pregnancy
• lambda sign of twin pregnancy
• Mehrlingsschwangerschaft