What are the reasons for bilateral renal dysplasia during fetal pregnancy?

Patient's question:

The left fetal kidney measures 5.23.53.1cm, with compressed and thinned renal parenchyma, approximately 0.36 in thickness. The renal pelvis is dilated, with a width of about 1.3. The periphery of the renal calyces shows significant expansion, with the widest point measuring about 1.2. The upper-middle segment of the left ureter is distended, with a width of about 0.6. The distal ureteral diameter is unclear. A renal-like hypoechoic mass is detected in the right kidney region, measuring approximately 1.60.80.8. The boundary between the renal parenchyma and the collecting system is indistinct. The left kidney shows severe hydronephrosis with mild ureteral dilation. The right kidney is absent or severely hypoplastic. The umbilical cord is wrapped around the neck once, with an amniotic fluid index of 15.2.

Doctor's answer:

Analysis of the condition: Hello, based on your description, your baby may have a urinary system malformation, as the ultrasound has revealed underdeveloped kidneys and a high amniotic fluid index.
Advice: Since you are already at term, you will have to deliver the baby, as induction of labor at this stage would still result in a live child. If you are still in the earlier stages of pregnancy, it is recommended that you undergo an abortion procedure and not carry the baby to term.

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