Without wishing to be sensational, I tell you an unusual news of those that leave us impressed.
It is an absolutely extraordinary situation that occurs once every 500,000 births.
It has happened in Hong Kong, where a healthy baby of 3,400 kilos was born with the twin brother's fetus inside the stomach.
During the mother's pregnancy, a “tumor” three or four centimeters wide with torso and limb-like tissues that was growing inside the baby's abdominal cavity had already been detected on ultrasound.
At birth, they operated on the baby to take away what his brother could have been.
These types of cases are known as "fetus in fetu", "fetus within fetus" or "endoparasite twin" in which a fetus that has not developed develops as a tumor within the other.
It is a failure that occurs after fertilization at the time when the cells begin to divide to form the organs of babies. One of the two embryos does not achieve adequate segmentation and is absorbed by the other.
To our greatest amazement, sometimes the fetus can remain for years inside the body of the healthy brother and even go unnoticed.
In most cases the malformed fetus grows inside the stomach, but it can also lodge in the skull or other areas of the body.
Anyway, with the means that exist today, thinking about the remote hypothesis that it happened, I imagine that it would be identified by ultrasound, as has happened in this case.
It is also a very rare situation, there will be no more than a hundred cases in the world, which I also understand, is solved without major problems through surgery.
