Can a fetus with hydronephrosis still be carried to term?

Generally, whether a fetus with renal pelvis dilation (hydronephrosis) is viable depends on the severity of the condition. If the hydronephrosis is mild, the pregnancy may still be viable. However, if the hydronephrosis is severe and accompanied by functional impairment, continuation of the pregnancy is usually not recommended. If any discomfort occurs, prompt medical attention is advised. Detailed explanations are as follows:

If the hydronephrosis is mild and there is no significant obstruction or other complications, it may represent a temporary phenomenon during the developmental process of the fetal urinary system. During pregnancy, the fetal urinary system continues to develop and mature, and mild hydronephrosis may resolve spontaneously as the fetus grows. In such cases, the pregnancy is generally considered viable.

However, if the hydronephrosis is severe—for example, if the renal pelvis separation exceeds 20 millimeters—and is accompanied by other serious urinary tract malformations or chromosomal abnormalities, this can cause significant damage to the fetal kidney function, potentially affecting the quality of life and survival of the fetus. In such cases, continuation of the pregnancy is generally not recommended.

During pregnancy, maintaining a healthy lifestyle is important. Avoid strenuous activities, maintain a left lateral decubitus sleeping position, manage fluid intake appropriately, and undergo regular prenatal examinations to monitor the growth and development of the fetus.