Cystic hygromas associated with Turner's syndrome. Report of three cases.

Three cases of cystic hygromas are reported. Two of these were singleton pregnancies diagnosed at 20 weeks' gestation and the other was an affected fetus in a twin pregnancy at 19 weeks gestation. Amniocentesis was done and chromosomal analysis revealed Turner syndrome in all cases. The two singleton pregnancies were terminated by intrauterine installation of PgF2a. The affected fetus of the twin pregnancy died at 24 weeks' gestation and the pregnancy continued.