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268356 tn?1236002604

when does yolk sac go away

I read somewhere that as the pregnancy progresses and the placenta begins functioning that the yolk sac disappears. I know that they placenta begins development around 10 weeks and is usually fully functional by 13-14 weeks. I just can't seem to find a guideline as for when the yolk sac disappears. I had my 12 week scan and it was still visible. Anyone know?
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Avatar universal
i had my first ulrasound at 9week and did not see a yolk sac is that ok
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Avatar universal
Mines disappeared between 6 and 10 weeks. It wasn't visible at my 10 week ultrasound
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1 Comments
And your baby was fine?
Avatar universal
I just had my 8 week and ultrasound and saw the yolk sac. they told me it was kinda rare to see so i was getting alittle worried. I never say one with my first child at all and we did our first ultrasound at 71/2 week with him. i am glad to hear it is not that rare.. thanks for posting
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268356 tn?1236002604
Thanks pmperez, So at some time between now and my 20 week scan it should go away. I guess it stays active until the placenta is fully functioning on it own.
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443185 tn?1211671293
Mine was still visable at 13 weeks, Im not sure when they go away....I had my 20 week anatomy scan last week and I didnt see it nor did they point it out, so I guess its gone..
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