title: Sirenomelia and anencephaly in one of dizygotic twins.
abstract: The combination of sirenomelia and anencephaly was observed in a stillborn dizygotic twin. A review of the literature revealed no other patients reported to have both conditions. Various explanations concerning the genesis of sirenomelia, and also the combination with anencephaly, are discussed.
mesh_terms: D000757:Anencephaly / Q000150:complications* / Q000473:pathology; D004480:Ectromelia / Q000150:complications* / Q000473:pathology; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D014427:Twins; D014429:Twins, Dizygotic