{"doi":"10.1002/bjs.5856","title":"Systematic review of the risk of developing a metachronous contralateral inguinal hernia in children","abstract":"<jats:title>Abstract</jats:title>\n               <jats:sec>\n                  <jats:title>Background</jats:title>\n                  <jats:p>This study aims to establish the risk of developing a metachronous contralateral inguinal hernia (MCIH) following open repair of a unilateral inguinal hernia in children.</jats:p>\n               </jats:sec>\n               <jats:sec>\n                  <jats:title>Methods</jats:title>\n                  <jats:p>A systematic review was performed using a defined search strategy. Studies in which children undergoing open repair of a unilateral inguinal hernia without contralateral exploration and who were followed up for MCIH development were included.</jats:p>\n               </jats:sec>\n               <jats:sec>\n                  <jats:title>Results</jats:title>\n                  <jats:p>Of 5937 titles and abstracts screened, 154 full-text articles were identified for review; 49 papers were analysed with data on 22 846 children. The incidence of MCIH was 7·2 per cent overall, 6·9 per cent in boys and 7·3 per cent in girls (P = 0·381). Children with a left-sided inguinal hernia had a significantly higher risk of developing a MCIH than those with a right-sided hernia (10·2 versus 6·3 per cent respectively; P &amp;lt; 0·001).</jats:p>\n               </jats:sec>\n               <jats:sec>\n                  <jats:title>Conclusion</jats:title>\n                  <jats:p>Overall, in both boys and girls, 14 contralateral explorations are required to prevent one metachronous hernia. The risk of developing a MCIH appears unchanged in early childhood, with a slight reduction after 12 years of age. Children with a left-sided hernia have the greatest risk of developing a contralateral hernia, but ten explorations are still required to prevent one metachronous hernia. Most MCIHs occur in the first 5 years after unilateral inguinal hernia repair.</jats:p>\n               </jats:sec>","journal":"British Journal of Surgery","year":2007,"id":20294,"datarank":8.159761145980097,"base_score":4.77912349311153,"endowment":4.77912349311153,"self_citation_contribution":0.7168685239667295,"citation_network_contribution":7.4428926220133675,"self_endowment_contribution":0.7168685239667295,"citer_contribution":7.4428926220133675,"corpus_percentile":null,"corpus_rank":null,"citation_count":118,"citer_count":112,"citers_with_citation_signal":81,"citers_with_endowment":81,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":null,"is_oa":false,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":134660,"name":"S Eaton","orcid":null,"position":1,"is_corresponding":false},{"id":134662,"name":"A Pierro","orcid":null,"position":2,"is_corresponding":false},{"id":134658,"name":"O Ron","orcid":null,"position":0,"is_corresponding":false}],"reference_count":0,"raw_metadata":{"has_enrichment":true,"base_score":4.77912349311153,"endowment":4.77912349311153,"datacite_reuse_total":0,"file_count":0,"downloads":0,"views":0,"has_version_chain":false,"is_dataset":false,"is_oa":false,"pmid":"17571299","pmcid":null,"openalex_id":"https://openalex.org/W2067799649","authors":[],"funders":[],"total_grants":0,"fwci":4.3887,"citation_percentile":0.94194251,"influential_citations":4,"citation_trend":[{"year":2012,"count":9},{"year":2013,"count":7},{"year":2014,"count":10},{"year":2015,"count":5},{"year":2016,"count":9},{"year":2017,"count":3},{"year":2018,"count":8},{"year":2019,"count":7},{"year":2020,"count":4},{"year":2021,"count":7},{"year":2022,"count":10},{"year":2023,"count":3},{"year":2024,"count":3},{"year":2025,"count":8},{"year":2026,"count":1}],"oa_status":"bronze","license":"https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model","oa_locations":[{"url":"https://academic.oup.com/bjs/article-pdf/94/7/804/36689955/bjs5856.pdf","host_type":"journal"},{"url":"https://academic.oup.com/bjs/article-pdf/94/7/804/36689955/bjs5856.pdf","host_type":"BRONZE"},{"url":"https://academic.oup.com/bjs/article-pdf/94/7/804/36689955/bjs5856.pdf","host_type":"publisher"},{"url":"https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fbjs.5856","host_type":"publisher"},{"url":"http://academic.oup.com/bjs/article-pdf/94/7/804/36689955/bjs5856.pdf","host_type":"publisher"},{"url":"https://doi.org/10.1002/bjs.5856","host_type":"journal"},{"url":"https://pubmed.ncbi.nlm.nih.gov/17571299","host_type":"repository"},{"url":"http://discovery.ucl.ac.uk/359421/","host_type":"repository"},{"url":"http://discovery.ucl.ac.uk/43093/","host_type":"repository"}],"fields_of_study":["Hernia repair and management","Intestinal and Peritoneal Adhesions","Congenital Diaphragmatic Hernia Studies","Medicine"],"mesh_terms":["Adolescent","Child","Child, Preschool","Female","Follow-Up Studies","Hernia, Inguinal","Humans","Infant","Infant, Newborn","Male","Recurrence","Risk Factors","Sex Factors","Time Factors","Age of Onset","Risk Assessment"],"keywords":["Medicine","Inguinal hernia","Hernia","Incidence (geometry)","General surgery","Surgery","Hernia repair"],"sdg_mappings":[{"sdg_number":0,"sdg_label":"Partnerships for the goals"}],"linked_datasets":[],"clinical_trials":[],"software_tools":[],"database_accessions":[],"source":"live","citation_network_status":"fetched"},"created_at":"2026-06-04T08:17:25.088007Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}