title: Editorial comment.
authors: Richard S
authors: RS
authors: Foster
mesh_terms: D006801:Humans; D008297:Male; D045423:Microbubbles; D012039:Regional Blood Flow; D013737:Testis / Q000098:blood supply* / Q000000981:diagnostic imaging*; D014463:Ultrasonography / Q000379:methods; D014646:Varicocele / Q000503:physiopathology*