Young–Madders syndrome

Also known as Pseudotrisomy 13 syndrome, Pseudo-trisomy 13 syndrome, Holoprosencephaly-Polydactyly Syndrome

Holoprosencephaly-postaxial polydactyly syndrome associates, in chromosomally normal neonates, holoprosencephaly, severe facial dysmorphism, postaxial polydactyly and other congenital abnormalities, suggestive of trisomy 13 (see this term)