title: Editorial comment.
authors: Dario
authors: D
authors: Fontana
authors: Paolo
authors: P
authors: Destefanis
mesh_terms: D006801:Humans; D007680:Kidney Neoplasms / Q000473:pathology*; D008297:Male; D012186:Retroperitoneal Neoplasms / Q000556:secondary* / Q000601:surgery*; D013736:Testicular Neoplasms / Q000473:pathology*; D019043:Vascular Neoplasms / Q000556:secondary* / Q000601:surgery*; D014682:Vena Cava, Inferior / Q000601:surgery*