El. Ross et al., ASCERTAINMENT OF 68,XX DOUBLE ANEUPLOIDY BY MIDTRIMESTER BIOCHEMICAL SCREENING - A CASE-REPORT, American journal of perinatology, 15(4), 1998, pp. 229-232
A fetus with 68,XX karyotype was ascertained by an elevated midtrimest
er MSHCG. By antenatal ultrasound, the only unusual finding was in rel
ation to the placenta. Preterm delivery was mandated by the developmen
t of severe preeclampsia. Postmortem examination of the stillborn fetu
s demonstrated no abnormal physical findings other than bilateral synd
actyly of fingers and toes.