This condition is found in approximately one out of every 100,000 live births; studies produce rates from 1 in 68,741 to 1 in 97,807. It is 100 to 150 times more likely in identical (monozygotic) twins than in singletons or fraternal twins.<unk>  is not associated with any ethnic background, but fetuses with<unk>  are more likely to be male.
Sirenomelia
Rhizomelia
Mesomelia
Dolichostenomelia
Phocomelia
Meromelia
Loxoscelism
Adiposogenital dystrophy