Bronshtein M, Bar-Hava I, Blumenfeld Z
Department of Obstetrics and Gynecology, Rambam Medical Center, Al-Kol Institute of Ultrasonography, Haifa, Israel.
Obstet Gynecol. 1993 Oct;82(4 Pt 1):490-3.
To describe the pathologic situations associated with the persistently nonvisualized fetal urinary bladder in the early second trimester.
We analyzed retrospectively 13,458 ultrasound examinations performed between 12-16 weeks' gestation in search of fetal malformations. Seventy percent of the patients were at low risk and 30% comprised a high-risk group for the detection of fetal anomalies.
Seven cases of persistent nonvisualization of the fetal urinary bladder were detected by transvaginal sonography among 13,458 fetuses. In one case bladder exstrophy, and in another bilateral multicystic dysplastic kidneys were diagnosed by postabortal examination. Five cases were associated with bilateral renal agenesis.
When one fails persistently to demonstrate the fetal urinary bladder during an examination lasting 30 minutes or longer, urinary tract pathology should be highly suspected. Failure to visualize the bladder may be associated with bladder exstrophy, bilateral renal agenesis, or late onset of bilateral multicystic dysplastic kidneys.
描述孕中期早期胎儿膀胱持续未显示相关的病理情况。
我们回顾性分析了13458例妊娠12至16周期间进行的超声检查，以寻找胎儿畸形。70%的患者为低风险，30%为检测胎儿异常的高风险组。
在13458例胎儿中，经阴道超声检查发现7例胎儿膀胱持续未显示。1例经流产后检查诊断为膀胱外翻，另1例诊断为双侧多囊性发育不良肾。5例与双侧肾缺如有关。
在持续30分钟或更长时间的检查中若始终未能显示胎儿膀胱，则应高度怀疑存在泌尿系统病理情况。膀胱未显示可能与膀胱外翻、双侧肾缺如或双侧多囊性发育不良肾的晚期发病有关。
