title: Discordant microform cleft lip in a dizygotic female twin.
abstract: Details are given regarding a pair of dizygotic twins, discordant for microform cleft lip. The maternal history is reviewed, indicating three environmental factors as relevant to the origin of the cleft, using the multifactoral threshold model. Nurses are encouraged to survey and report cases concerning microform cleft lip.
mesh_terms: D000328:Adult; D001361:Avitaminosis / Q000178:diet therapy; D002971:Cleft Lip / Q000209:etiology*; D004200:Diseases in Twins; D005260:Female; D006801:Humans; D007231:Infant, Newborn; D008297:Male; D009773:Obstetric Nursing; D011247:Pregnancy; D011248:Pregnancy Complications / Q000178:diet therapy; D012306:Risk; D012907:Smoking; D014429:Twins, Dizygotic