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目的探讨尿直肠隔畸形序列征(URSMS)的产前超声表现和解剖特点。方法对我院产前超声诊断的5例URSMS胎儿的产前超声表现和引产后尸体解剖结构进行总结分析。结果 URSMS特征性超前超声表现包括肛门闭锁、肠管扩张及肠石症、腹腔囊性团块和泌尿生殖系统畸形;同时可伴发脊柱、心脏及其他异常。引产后解剖结果证实5例均为部分型URSMS,其中4例男性,1例性别不定,染色体证实为女性。5例中3例外生殖器形态异常。5例URSMS中4例胎儿腹腔均见泄殖腔,1例男性胎儿未见泄殖腔,但后尿道壁与直肠壁融合。结论产前超声发现肛门闭锁、肾脏异常以及外生殖器异常有助于诊断URSMS,腹腔内囊性团块是女性URSMS的特征性产前超声改变,肠管扩张及肠石症是男性URSMS的特征性产前超声改变,具有重要诊断价值。
Objective To investigate the prenatal ultrasound findings and anatomical features of URSMS. Methods The prenatal ultrasound findings of 5 URSMS fetuses diagnosed in our hospital during prenatal ultrasound diagnosis and the anatomical structure of postmortem cadaver were analyzed. Results URSMS characteristic ultrasonographic manifestations include anus atresia, bowel expansion and intestinal stone disease, cystic celiac and genitourinary system deformities; accompanied by spine, heart and other abnormalities. Post-abortion anatomic results confirmed that 5 cases were all partial URSMS, of which 4 were males, one case of gender uncertainty, chromosome confirmed as female. In 5 cases, 3 cases were abnormal genitalia. In 5 cases of URSMS, 4 cases of fetal abdominal cavity were found in the cloaca, 1 case of male fetus no cloaca, but posterior urethral wall and rectal wall fusion. Conclusions Anus, anomalies of the kidney and external genitalia were found to be useful for the diagnosis of URSMS by prenatal ultrasound. The intraperitoneal cystic mass is characteristic of prenatal ultrasound changes in female URSMS. Intestinal distension and enterolithiasis are characteristic of male URSMS Ultrasound changes before, with important diagnostic value.