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Sang zhai mou si futt
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But seriously…
It means that the new-born baby has an Imperforate Anus.
What Is an Imperforate Anus?
Quite simply, an imperforate anus is when there is no anal opening. In some cases, there may be a very small one, called a fistula, that isn`t big enough for the child to defecate. And in other cases, the fistula opens into the urethra or even the vagina, in girls. Exactly how this manifests in each child will depend entirely on the child.
Imperforate anus is more common in boys than in girls and occurs once in every 5,000 births or so. Unfortunately, this type of birth defect is often accompanied by other problems.
https://wehavekids.com/parenting/imperforate-anus