<unk>  occurs in about one in 5,000 live births, but more conceptions are affected by the syndrome because the majority of those diagnosed with the condition prenatally will not survive to birth. Although women in their 20s and early 30s may conceive babies with<unk> , the risk of conceiving a child with it increases with a woman's age. The average maternal age for conceiving a child with this disorder is 32½.
Edwards syndrome
PHACE syndrome
Fountain syndrome
Wooden chest syndrome
Dressler syndrome
Burnside–Butler syndrome
Adams–Stokes syndrome
Overlap syndrome