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By extrapolating the number of expected identical twins (about one-third) from annual multiple births, and the number of twins with monochorionic placentae (about two-thirds), and from these the number thought to develop TTTS (about 15%), there are at least 4,500 TTTS cases per year in the U.S. alone: 139,816 × 0.33 × 0.66 × 0.15 = 4,568 ...
Monoamniotic twins are always monochorionic and are usually termed Monoamniotic-Monochorionic ("MoMo" or "Mono Mono") twins. [1] [2] They share the placenta, but have two separate umbilical cords. Monoamniotic twins develop when an embryo does not split until after formation of the amniotic sac, [1] at about 9–13 days after fertilization. [3]
The presence of a "T-sign" at the inter-twin membrane-placental junction is indicative of monochorionic-diamniotic twins (that is, the junction between the inter-twin membrane and the external rim forms a right angle), whereas dichorionic twins present with a "lambda (λ) sign" (that is, the chorion forms a wedge-shaped protrusion into the ...
Identical twins Rebecca "Becca" Lawrence and Christina "Tina" Keefer came into the world on the same day — and so did their babies.
After identical twin sisters from Delaware married identical twin brothers from Tennessee, the children they are raising together share in a rare biological phenomenon. When identical twin sisters ...
It's the ultimate act of sisterly love: a woman carrying her identical twin's baby after she survived cancer. Dawn Ardolino Policastro, from Long Island, New York, gave birth to her sister's son ...
The smallest of the octuplets, Odera, died a week after birth. [138] A set of octuplets was born between 13–16 September 2000, in Milan, Italy, to Mariella Mazzara and Giovanni Pierrera of Trapani. One died immediately after birth; two within a few days of birth; and the oldest, Margherita, died a month later on 10 October. [139] [140]
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