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

Fetal Lower Urinary Tract Obstruction (LUTO) · case challenge

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← View the full flowchartBased on LUTO consensus

Case #1Imaging / Fetal medicine / Pediatric urology

📋 Case data

Bladder/kidney/fluid + renal function prognosisOligohydramnios/anhydramnios, echogenic or cystic cortex (dysplasia), isolated lesion

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

Step 1 / 1 · Bladder/kidney/fluid + renal function prognosis

Bladder/kidney/amniotic fluid signs + renal function prognosis?

💡 LUTO = bladder outlet obstruction, most commonly posterior urethral valves (PUV, males only, 63%); the rest urethral atresia (10%, M/F), etc. Typical: megacystis, thickened bladder wall, dilated posterior urethra keyhole sign (PUV), bilateral hydronephrosis, oligohydramnios; echogenic/cystic renal cortex = dysplasia. Oligohydramnios → pulmonary hypoplasia (lethal). Megacystis = bladder longitudinal diameter >7 mm in the first trimester or not emptying over 45 minutes.

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.