09/06/2026
Two rarities on this beautiful placenta ❤️
One of my favorite parts of examining a placenta after birth is seeing the unique story it tells—and this one had two fascinating findings: a yolk sac remnant and a furcate cord insertion.
🤍 Yolk Sac Remnant
Sometimes when examining a placenta after birth, you may find a tiny little piece of your baby’s earliest beginnings—the yolk sac remnant.
The yolk sac plays an important role during the first weeks of pregnancy, helping support the developing embryo before the placenta fully takes over. It contributes to early nutrient transfer and is one of the first places where blood cells are formed.
As pregnancy progresses, the yolk sac normally shrinks and disappears. Occasionally, though, a small remnant persists within the membranes and can still be found when examining the placenta after birth. It can look like a tiny little seed tucked within the membranes.
🤍 Furcate Cord Insertion
The second interesting finding was a mild furcate insertion. This can be identified by the distinct “forking” appearance of the vessels where the umbilical cord meets the placenta.
Normally, the umbilical vessels remain bundled together and protected by Wharton’s jelly until they reach the placenta. With a furcate insertion, the vessels separate from one another before reaching the placental surface. Once they separate, they lose the protection of Wharton’s jelly, leaving portions of the vessels exposed and potentially more vulnerable to injury.
Furcate insertions are considered rare and are sometimes not even identified on ultrasound, meaning the first time they are noticed may be during the examination of the placenta after birth.
Two unusual findings on one beautiful placenta—one offering a tiny glimpse into the very beginning of this baby’s development, and the other showing just how uniquely the placenta and umbilical cord can form. ❤️
The placenta really is an incredible record of the journey from those earliest weeks of pregnancy all the way to birth.
*This placenta was frozen, which is why it looks so red*
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