In which condition is this most likely to be seen?
USG showing Sandal Gap. There is an apparent increase in the inter space between the great toe of the foot from the rest of the toes (likened to the gap caused by a sandal). It is a soft tissue marker of Down's Syndrome.
Trisomy 16
Monosomy X
Trisomy 21
Trisomy 13
Obstetrics