Abstract
Anterior urethral valves (AUVs) is an unusual cause of congenital obstruction of the male urethra, being 15–30 times less common than posterior urethral valves. We present a case of AUV diagnosed at 24th gestational week. Ultrasonography and fetal MRI revealed hydronephrotic kidneys with ureteral duplicity, a distended bladder and perineal cystic mass which confirmed dilated anterior urethra in a male fetus. Diagnosis was confirmed postnatally by voiding cystourethrogram and surgery.
Highlights
A circumferential diaphragm-type membrane was encountered in the bulbar urethra, which represented an anterior urethral valve
Congenital anterior urethral obstruction is less frequent than posterior urethral valve
Anterior urethral valves (AUVs) is situated mostly at the union of the glandular and penile urethra. They are most commonly found in the bulbar urethra (40%) whereas 30% present at the penoscrotal junction and 30% at the pendulous urethra [2]
Summary
A 36-year-old woman (gravida 2, para 2) was referred to our imaging center at the 28th week of her pregnancy because of fetal hydronephrosis. Ultrasonography revealed hydronephrotic kidneys with bilateral ureteral duplicity, a distended bladder and perineal cystic mass in a male fetus. Fetal uro-MRI showed dilated anterior urethra and bilateral hydronephrosis with a preserved renal parenchyma. The newborn remained in the neonatal intensive care unit. Clinical manifestations included palpable distended bladder, and severe renal insufficiency and increased creatinine levels.
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