What is fetal hydrophrenosis?

Hydronephrosis.: Hydronephrosis is a greek word for water in the kidneys; it is a medical term used to descibe abnormal urine retention inside the kidney collecting system, usually resulting from a stricture/ureterocele downstream in the ureter and/or bladder. If unilateral it is not serious, but bilateral can become a potential threat to the fetal health/life. Neonatologists will put these babies on amoxicillin.

Swollen fetal kidney: Baby's kidney is swollen with urine. Very common & not serious if mild & only present on one side. Most commonly due to partial blockage to kidney pelvis (funnel draining urine). Can also be due to blockage at lower end of ureters, urethral valve blockage in boys or bladder reflux. Virtually never need to intervene before birth or deliver early. Best managed &/or counseled by pediatric urologist.