What to do if had enlarged, echogenic (bright) kidneys on fetal ultrasound?

Follow up with doc. Fetal kidneys are usually not very echogenic on ultrasound . After birth of the baby, the doctor should repeat the study and monitor the baby's urine to see what is going on.
Waiting. Usually normal newborn kidneys are somewhat bright depending on maturity of infant. If enlarged physiologic variation. intrinsic renal disease, polycystic renal disease, obstructions, overgrowth disorders ,infections or chromosomal aberration are possible causes. When infant delivered determination of etiology can be narrowed.