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Holoprosencephaly and polydactyly: a possible expression of the hydrolethalus syndrome.
  1. H Bachman,
  2. R D Clark,
  3. W Salahi
  1. Department of Pediatrics, Harbor-UCLA Medical Center, Torrance 90502.


    We report two fetuses with hydrocephalus, features of holoprosencephaly, and postaxial polydactyly born to a consanguineous Mexican-American couple. The phenotype is consistent with the hydrolethalus syndrome, although holoprosencephaly has not previously been seen in this condition. We believe other similar cases with a trisomy 13 phenotype but normal chromosomes may also have the hydrolethalus syndrome.

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