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March 26, 2016
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1 Introduction
Anembryonic gestation



DiseaseDisorder infobox |
Name = Anembryonic gestation |
ICD10 = O02.0 |
ICD9 = 631 |

An anembryonic gestation (aka blighted ovum) is a pregnancy in which a visible embryo never develops within a normal-appearing gestational sac, which likely occurs as a result of early embryonic death with continued development of the trophoblast.
When small, the sac cannot be distinguished from the early normal pregnancy, as there may be a yolk sac, though a fetal pole is not seen.

This is one of the causes of miscarriage of a pregnancy.

For diagnosis, the sac must be of sufficient size that the absence of normal embryonic elements is established.

A pregnancy is anembryonic if a transvaginal ultrasound reveals a sac with a mean gestational sac diameter (MGD) greater than 13mm and no yolk sac, or a MGD >18 mm with no embryo.

Many centers offer mothers a follow-up ultrasound 10 days later to verify diagnosis.

http://www.obgyn.ufl.edu/ultrasound/4Gyn/1First%20TM/9Anembryonic.html Anembryonic gestation


This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Anembryonic gestation".

Last Modified:   2005-12-23

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