Similarities and differences among TTTS, TAPS, and sFGR on ultrasound examination of both twins

Ultrasound finding	TTTS	TAPS	sFGR
Fluid discordance	+++++ Oligohydramnios in one sac and polyhydramnios in the other sac	–	++ Oligohydramnios in the sac of the intrauterine growth restricted twin, normal amniotic fluid volume in the AGA twin
Growth discordance (>25% difference between twins)	++ 50% will have estimated fetal weight <10^th percentile	+	+++++ 100% will have estimated fetal weight <10^th percentile
MCA Doppler discordance (>1.5 MoM in donor/anemic and <0.8 MoM in recipient/plethoric)	++	+++++	+
Fetal bladder discordance	Small donor bladder and/or enlarged recipient bladder	–	–
Ductus venosus abnormalities	+++++	++	++
Fetal hydrops	+++++	+	–
Placental appearance: Donor side hyperechoic and thickened, recipient side normal	++	+++++	–

"+" signifies the prominence of the ultrasound finding. "–" signifies that the ultrasound finding is not associated with the diagnosis.

TTTS: twin-twin transfusion syndrome; TAPS: twin anemia polycythemia sequence; sFGR: selective fetal growth restriction; AGA: appropriate for gestational age; MCA: middle cerebral artery; MoM: multiples of the median.

Graphic 110205 Version 8.0

خرید پکیج

Similarities and differences among TTTS, TAPS, and sFGR on ultrasound examination of both twins