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Fetal bladder outlet obstruction diagnosed at 13-weeks' gestation
1Department of Obstetrics and Gynecology, Oita Medical University, Japan.
Asia-Oceania Journal of Obstetrics and Gynaecology
|December 1, 1994
Summary
Fetal urethral obstruction, identified by increased bladder size and hydronephrosis, was successfully managed with antenatal procedures. Post-abortion autopsy confirmed a posterior valve as the cause, with no signs of renal dysplasia.
Area of Science:
- Prenatal diagnosis and management of congenital anomalies.
- Fetal medicine and ultrasonography.
- Urology and pediatric surgery.
Background:
- Fetal urethral obstruction presents a significant diagnostic and management challenge in prenatal care.
- Early identification of fetal urinary tract anomalies is crucial for potential intervention.
- Ultrasonography is the primary imaging modality for detecting fetal structural abnormalities.
Observation:
- Ultrasonography at 13 weeks' gestation revealed increased fetal bladder size and bilateral hydronephrosis.
- Antenatal procedures, including urine sampling, were performed between 13 and 16 weeks' gestation.
- Fetal renal function appeared unaffected by the diagnostic and therapeutic interventions.
Findings:
- A diagnosis of fetal urethral obstruction was established.
- Autopsy at 16 weeks' gestation identified a posterior valve as the cause of obstruction.
- No histological evidence of fetal renal dysplasia was observed, suggesting preserved renal development.
Implications:
- This case highlights the feasibility of antenatal diagnosis and management of fetal urethral obstruction.
- Preservation of renal function is possible with timely intervention in cases of posterior valves.
- Further research into optimal timing and techniques for antenatal intervention is warranted.