Patient's question:
What is the reason for an infant being born without an anus, and what causes it?Doctor's answer:
Guidance: Hello, the abnormality in the mother's body during the fetus's development in the uterus is considered a type of variation. Due to the undirected nature of variation, it is difficult to determine the exact cause. It may be caused by a gene mutation, or it may be caused by gene recombination, or it may be caused by chromosomal aberration. Wish you health!