分析胆道闭锁产前及生后超声影像特征，探讨胆道闭锁产前超声诊断线索。

回顾性分析2021年3月至2025年3月在湖北省妇幼保健院进行产前超声检查并经手术确诊的8例胆道闭锁患儿的产前及生后超声声像图。

8例中3例产前超声检查未检出明显异常。5例产前超声发现胆道系统异常，其中2例产前2次或3次超声提示胆囊显示不清或隐约可见胆囊声像；3例产前超声提示胆囊显示不清或见形态僵硬胆囊并肝门区不规则无回声。8例生后超声均提示胆囊异常（胆囊显示不清、胆囊形态僵硬或小胆囊）、肝门区纤维条索征、胆囊收缩功能异常及肝动脉扩张，生后3例肝门区见无回声。

产前胆囊未显示、胆囊未显示合并肝门区无回声或胆囊形态僵硬合并肝门区无回声时，均应怀疑胆道闭锁可能性。产前超声诊断胆道闭锁较为困难，产前可疑胆道异常的病例，出生后需密切关注新生儿黄疸及大便情况，超声复查胆囊，做到早发现、早诊断、早治疗。

To analyze the prenatal and postnatal ultrasonic imaging features of biliary atresia, and explore the prenatal ultrasonic diagnostic clues for this condition.

A retrospective analysis was conducted on the prenatal and postnatal ultrasound sonograms of 8 children who underwent prenatal ultrasound examinations at Hubei Provincial Maternal and Child Health Hospital from March 2021 to March 2025 and were diagnosed with biliary atresia by surgery.

Of the 8 cases, 3 showed no obvious abnormalities on prenatal ultrasound. Abnormalities in the biliary system were identified by prenatal ultrasound in 5 cases, among which 2 had prenatal ultrasound examinations (conducted 2 or 3 times) indicating that the gallbladder was not clearly visualized or only faintly visible. The remaining 3 cases had prenatal ultrasound findings suggesting either unclear visualization of the gallbladder, or the presence of a gallbladder with rigid morphology accompanied by irregular anechoic areas in the hepatic hilum. Ultrasonography performed on all 8 infants after birth revealed gallbladder abnormalities (including unclear visualization of the gallbladder, rigid gallbladder morphology, or a small gallbladder), fibrous cord sign in the hepatic hilar region, abnormal gallbladder contraction function, and hepatic artery dilatation. Among them, anechoic areas in the hepatic hilar region were observed in 3 infants after birth.

When the fetal gallbladder is not visualized prenatally, non-visualization of the gallbladder is accompanied by anechoic areas in the hepatic hilum, or the gallbladder has a rigid morphology combined with anechoic areas in the hepatic hilum, the possibility of biliary atresia should be suspected. Prenatal ultrasound diagnosis of biliary atresia is relatively difficult. For cases with suspected biliary abnormalities identified prenatally, close attention should be paid to neonatal jaundice and stool characteristics after birth, and a follow-up ultrasound examination of the gallbladder is necessary. This aims to achieve early detection, early diagnosis, and early treatment of the condition.