Twin-to-twin transfusion syndrome

Case contributed by Dr James Harvey

Presentation

Follow-up obstetric ultrasound in a patient with MCDA twins.

Patient Data

Age: 25 years
Gender: Female
Ultrasound

MCDA twins. Posterior placenta.

Twin A (donor):
Cephalic presentation. Oligohydramnios with deepest vertical pocket measuring only 0.7 cm.
Reduced MCA pulsatility index. Intermittent absent end diastolic flow within the umbilical artery. MCA S/D ratio (2.1) less than umbilical artery S/D ratio (4.5).

Twin B (recipient):
Cephalic presentation. Polyhydramnios with deepest vertical pocket measuring 10.6 cm. Large bladder. No hydrops.

Case Discussion

Features of twin-to-twin transfusion syndrome (TTTS) with abnormal Dopplers within the donor twin, reflecting stage III TTTS.

The patient underwent laser photocoagulation that same day.

How to use cases

You can use Radiopaedia cases in a variety of ways to help you learn and teach.

Creating your own cases is easy.

Updating… Please wait.

 Unable to process the form. Check for errors and try again.

 Thank you for updating your details.