Yolk sac number in multiple gestations (monochorionic)
From: Rich Dempsey RDMS/RVT (ridem@msn.com)
Wed Jun 23 23:16:11 2004
While EV scanning with a student, an early IUP (5.1 wks by GSD) was
seen- a single gestational sac containing 3 cystic structures; the
largest of which was 9mm. The question arose: ? In a single gestational
sac (presumably a monochorionic gestation) is it possible to have 3 yolk
sacs, or can this be a combination of a yolk sac, vitelline membrane
plus possibly an early amniotic membrane. ? No embyronic pole was seen
(yet), no bHCG was available, however LMP and GSD placed this probable
early IUP at 5 weeks.
Please forgive my hazy ignorance of embryology (and spelling).
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