Regular foetal growth scans were offered fortnightly to monochorionic diamniotic twins (MCDA) from 16 weeks of gestation onwards and every 4 weeks in dichorionic diamniotic
twins (DCDA) from 20 weeks onwards until 36 weeks of gestation.
A recent transvaginal ultrasound revealed dichorionic diamniotic
twin pregnancy with normal fetal heart rate.
Discordant transient extreme hyperleukocytosis in dichorionic diamniotic
Her 8th week ultrasound scan revealed a dichorionic diamniotic
In April 2015 a case of dichorionic diamniotic
twin delivery presented at Shifa International Hospital in a multigravida (G 6 P 3+2) mother.
This case involved dichorionic diamniotic
(Di-Di) twins, of whom only the first infant had C.
Boy K's mother was referred to Maternal Fetal Medicine for previous dichorionic diamniotic
twin gestation with demise of one twin at 8 weeks gestation and maternal anti-e, anti-K1 (Kell), and anti-C antibodies discovered during the prenatal antibody screen.
Chorionicity was classified as: dichorionic diamniotic
(DCDA), monochorionic diamniotic (MCDA) and monochorionic monoamniotic (MCMA).
When ultrasonography reveals the absence of a "twin-peak sign" indicating a monochorionic placenta, the twins are most likely monozygotic; however, a dichorionic diamniotic
(DCDA)  placenta--as evidenced by the presence of a twin-peak sign and the same sex for both fetuses--is observed in at least 40% of all twin pregnancies and is compatible with both monozygotic and dizygotic twins.
As we know, twin pregnancies can present in a two-placenta double-membrane sac (dichorionic diamniotic
), in a single-placenta double-membrane sac (monochorionic diamniotic), or in some version thereof.
Cases of both monochorionic diamniotic and dichorionic diamniotic
twin pregnancies were included.
Chorionicity is best seen at the 11-14 weeks scan during which time the dichorionic diamniotic
pregnancy shows a twin peak sign (lambda sign).