“…Twenty studies compared surgical ligation and sclero‐embolization in patients with varicocele. There were three prospective non‐randomized studies (Nasr et al, 2017; Nasser et al, 2020; Sepúlveda et al, 2018), five randomized clinical trials (Bolla, 2014; Nieschlag et al, 1993; Sayfan et al, 1992; Yavetz et al, 1992; Zucchi et al, 2005), and 12 retrospective studies (Bechara et al, 2009; Beutner et al, 2007; Dewire et al, 1994; Feneley et al, 1997; Jing et al, 2020; Mazzoni et al, 1999, 2001; Mongioì et al, 2019; Motta et al, 2019; Parsch et al, 1990; Shlansky‐Goldberg et al, 1997; Wickham et al, 2021).…”