症例 challenge · Imaging / Fetal medicine / Pediatric urology · teaching

Fetal Hydronephrosis (UTD Classification) · case challenge

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← View the full flowchartBased on UTD 2014 consensus

Case #1Imaging / Fetal medicine / Pediatric urology

📋 Case data

APRPD + risk parameters (UTD classification)UTD A2–3 increased-risk (APRPD ≥7/≥10 mm or peripheral calyces/ureteric dilation/parenchymal abnormality/bladder abnormality)

Data is taken from this pathway's reviewed node text. Work through the pathway step by step.

Step 1 / 1 · APRPD + risk parameters (UTD classification)

APRPD + risk parameters (UTD classification)?

💡 The most common prenatal urinary abnormality. APRPD (anteroposterior renal pelvic diameter, measured at the maximal transverse plane). Abnormal thresholds (NICHD): mid-trimester ≥4 mm, ≥32 weeks ≥7 mm. Increased-risk parameters: peripheral calyceal dilation, ureteric dilation, renal parenchymal abnormality (thin/echogenic), bladder abnormality, oligohydramnios.

For teaching. Decisions and their basis are taken from this site's reviewed care pathways; for licensed clinicians/trainees, this does not replace clinical judgment or local protocols.