The takeaway from these stories is that a diagnosis of an enlarged yolk sac does not doom your pregnancy. Here are the links to some women who continued on in their pregnancies:
One of my hopes by sharing these stories and links is that women who know of other stories or have their own success story will share them here as well. These are only a few of the stories I've read but, if you've been told there is no hope, these stories will prove your doctor wrong.
Stacy was sent home to miscarry by her doctor because her yolk sac was enlarged. Her yolk sac grew to 9mm. Her baby was born perfectly healthy.
Read Stacy's story,
Tulip was measuring about a week behind and the yolk sac measured 9.2mm. She went on to have her beautiful baby.
Read Tulip's story,
Tara had a yolk sac measuring 8mm. She's just recently had her 20-week ultrasound and everything looks wonderful!
Read Tara's story,
One concerned husband reported that the yolk sac during his wife's pregnancy measured 8.2mm. They went on to have a healthy baby girl.
Read his story,
Very Large Yolk Sac and Bicornuate Uterus in a Live Birth A case report in which a yolk sac was measured at 8.1mm but resulted in a live birth. This report states that "the quality of the yolk sac might be more important than its size."
Also, if you'll find I've blogged a on the unreliability of ultrasound measurements. It may just be that your tech was off. It happens more frequently than you think.
If you end up being diagnosed with an enlarged yolk sac and find out all is well, could you consider sharing your story at the Misdiagnosed Miscarriage site. You'll give other women hope.