Fetus A	Fetus B
CASE 1
Ultrasound1	normal fetal structure	edema+increased nuchal fold+ductus agenesis
QF-PCR(CVS)	mos 90% X/10% XX	mos 10% X/90% XX
CVS-short culture	45,X	-
CVS-long culture	mos 45,X[3]/46,XX[27]	-
Array(CVS)	-	mos 10% X/90% XX
QF-PCR(AF)	≈ XX	X
AF-culture	mos 45,X[2]/46,XX[78]	45,X[20]
Control ultrasound	normal fetal structure	subcutaneous edema+ascitis
CASE 2
Ultrasound1	normal fetal structure	edema+increased NT+reverse ductus venosus
QF-PCR(CVS)	mos X/XX or XXX	XX
CVS-long culture	45,X	46,XX,+11,der(11;22)(p10;q10)
Array(CVS)	mos X/XX or XXX	dup11p
QF-PCR(AF)	XX	-
Array(AF)	XX	-
Control ultrasound	normal fetal structure	no fetal activity