1.3 Literature review
Information sources and search key words
Using the search terms “congenital bronchobiliary fistula” OR “bronchobiliary fistula”, Medline (via PubMed), Embase and web of science databases, China National Knowledge Infrastructure (CNKI) and Wanfang were searched. We also searched Chinese Medical Care Repository, searches for relevant articles were performed with the following items: “congenital bronchobiliary fistula” OR “bronchobiliary fistula. Searches were limited to articles published in English till March 31, 2022.
Eligible criteria
Inclusion:
Congenital bronchobiliary fistula patients, not restricted by age, gender, disease course, race, region and other factors;
Exclusion:
1)Secondary bronchobiliary fistula patients;
2)Article not published in Chinese or English;
3)In vitro and in vivo studies;
4)Conference abstracts;
5)Full-text or data cannot be extracted
Searching results
Searches of literatures initially identified 1149 potentially relevant records. Following review of the title and abstract, 1051 records were excluded, and a further 73 duplicated records were excluded, 25 records were included. Therefore, 19 English articles and 6 Chinese articles were included, a total of 26 cases[4-28]. Combined with 1 case in this article, a total of 27 cases of CBBF were enrolled. The clinical data summary table is shown in Table 1.
Figure 5. Flow diagram of congenital bronchobiliary fistula
Table1. All cases of congenital baonchobiliary fistula reported to data