According to different series, the overall prevalence of adolescence varicocele ranges from 4.1% to 35.1% (Jacobson & Johnson, 2017). In particular, 35% of infertile males have varicocele (Gorelick & Goldstein, 1993). The interest about varicocele has changed since the 1950s, when the first relationship between varicocele and infertility was suggested (Tulloch, 1955). Attention to prevent infertility aims to have early treatment of this disease, thus interest has moved from adult to paediatric varicocele. Selecting articles about varicocele in adolescence since the 1950s, we found that almost half of medical literature articles have been published from 2000 onwards. The aim of the study is to analyse the general topics of interest regarding paediatric varicocele and any difference across countries and years. 2 | MATERIAL AND ME THODS We reviewed the literature about paediatric varicocele between 2000, January 1st and 2018, December, 31st. We performed a systematic review inserting into PUBMED database the keywords 'VARICOCELE AND ADOLESCENCE AND COUNTRY' where country was replaced by every country, with no exclusion. We considered also 'adolescence' as a keyword as well as 'children' and 'pediatric', since idiopathic varicocele mainly represents a disease of adolescent age; then, the age range reported in the papers was used as an inclusion and exclusion criterion to select the articles. At first, the duplicates, papers and articles published only in original language were excluded. Of the screened records, all the titles and abstracts were studied to evaluate for the eligibility criteria. In our review, we analysed all the published articles in order to select only the ones matching the correct subject, age range