Is it serious for a baby in the womb to have hydronephrosis?

Patient's question:

No

Doctor's answer:

This is a case of fetal hydronephrosis during pregnancy. This value indicates the presence of hydronephrosis. It is considered that the catheter used for urination may have narrowing or blockage, and prolonged exposure can lead to abnormal renal function in the fetus. Even if the child is born, it may not be viable. If the hydronephrosis decreases over time, it is considered a functional obstruction that does not cause abnormal renal function, and in this case, it is viable.