Sofía, Philomena, Veronica and Isabel Campos have one heckuva birth story. The identical quadruplets, born at Banner - ...

Mono-mono twins are an incredibly rare type of identical twins who share both a placenta and an amniotic sac. While this makes for a high-risk pregnancy, advances in monitoring and treatment have ...

Di-di twins are like roommates with their own room and fridge. They each have their own placenta and amniotic sac – and because they don't share as many resources, they have a lower rate of ...

twins. This means that each baby has their own placenta and amniotic sac, rather than sharing with each other. As a result, Vanderent told Newsweek that she always thought that Ava and Mia "were ...

shared a placenta but were each in their own amniotic sacs. Meanwhile, the third baby, Rafa, who is non-identical, had his own placenta and sac. Twins sharing a placenta are at risk of restricting ...

alluding to twins in their caption. Then on Wednesday, March 5, Nelson revealed that the unborn babies are monochorionic, diamniotic (MCDA) — meaning each has its own amniotic sac but they share ...

MCDA twins are identical twins who share a single placenta (monochorionic) but have two separate amniotic sacs (diamniotic). This type of twin pregnancy occurs when a fertilised egg splits between ...

Nelson, 33, went on to explain that the twins are monochorionic, diamniotic (MCDA), which is when each baby has its own amniotic sac, but they share a single placenta, per Columbia University.