• 1. Department of Ultrasound, Peking University Shenzhen Hospital, Shenzhen, 518035, P.R.China;
  • 2. Shantou University Medical College, Shantou, 515063, P.R.China;
LIU Li, Email: liuli126126@126.com
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Objectives To systematically review the incidence of various outcomes in non-visualization of the fetal gallbladder (NVFGB) fetuses by prenatal ultrasonography.Methods PubMed, The Cochrane Library, Elsevier, ClinicalKey, CBM, CNKI and WanFang Data databases were electronically searched to collect studies on NVFGB fetuses by prenatal ultrasonography from January 1990 to March 2019. Two reviewers independently screened literature, extracted data and assessed risk of bias of included studies. Then, meta-analysis was performed by using R 3.5.2 software.Results A total of 9 studies were included. The results of meta-analysis showed that: the incidence of fetal biliary atresia was 1.0%, with 2.0% in the isolated and 3.0% in the non-isolated. The incidence of cystic fibrosis was 6.0%, with 2.0% in the isolated and 9.0% in the non-isolated. The incidence of chromosomal abnormality was 5.0%, and 31.0% in non-isolated. The incidence of other malformations other than those described above was 13.0%, with 44.0% in the non-isolated. The incidence of gallbladder agenesis or absent gallbladder was 22.0%, with 28.0% in the isolated. The incidence of later visualization of gallbladder and normal fetal outcomes was 53.0%, with 63.0% in the isolated.Conclusions Current evidence shows that most non-visualization of the fetal gallbladder can identify the presence of gallbladder during late gestation or neonatal ultrasonography. The exactly isolated non-visualization of the fetal gallbladder is highly related to the fetal gallbladder agenesis or the absence of the gallbladder. The non-isolated non-visualization of the fetal gallbladder is highly related to biliary atresia, cystic fibrosis (particularly in the presence of fetal bowel echogenicity), and chromosomal abnormalities (especially chromosome aneuploidy).

Citation: XIA Qingqing, WANG Yue, LIU Li. The incidence of different fetal outcomes for prenatal ultrasound screening in non-visualization of the fetal gallbladder: a meta-analysis. Chinese Journal of Evidence-Based Medicine, 2019, 19(12): 1423-1429. doi: 10.7507/1672-2531.201906002 Copy

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