0:00

This is an MRI of the abdomen and pelvis.

0:03

in a patient with multiple gestations.

0:07

These are coronal T2-weighted images,

0:09

and we see the enlarged gravid uterus with

0:13

T2 heterogeneous myometrium in the periphery.

0:16

We begin to see a fetus here in the

0:19

superior aspect of the uterus near the

0:21

fundus, and then there are additional

0:24

one, two fetuses inferiorly and anteriorly.

0:28

So this is a triplet pregnancy.

0:30

We can see a clear delineation between

0:33

the amniotic sac that contains the

0:35

superiormost fetus and the amniotic sac

0:38

that contains the two inferior fetuses.

0:42

If we count the number of placentas

0:44

that are present on these images,

0:46

we see a fundal placenta, which is

0:48

associated with the superior fetus.

0:52

And then we see a lateral and more

0:54

inferiorly located placenta, which is

0:57

supplying the inferior two fetuses.

1:00

And so this is a dichorionic triplet gestation.

1:06

The sagittal images also nicely illustrate

1:09

the relationship between the amniotic

1:11

sacs and the placenta for this pregnancy.

1:15

So again, we see a single fetus here

1:18

superiorly contained within its own

1:20

amniotic sac with its own placenta, and

1:23

then two fetuses within one amniotic

1:26

sac inferiorly and sharing one placenta.

1:31

Again, we see the cervix for this patient.

1:33

A small amount of fluid in the cervical canal,

1:36

but the internal cervical os is closed.

1:39

We can also see the ovaries for this patient.

1:42

Here is the left ovary, which

1:44

again contains T2 bright follicles.

1:47

In the right ovary, you may have noticed that

1:49

this patient also has an ovarian cyst with

1:52

a clump of surrounding normal ovarian tissue.