“…The incidence of that tumour type in children is extremely rare. Only few cases, concerning mainly teenagers, have been reported so far [3][4][5]. In these cases no risk factors typical of adults such as smoking, pelvic irradiation, cyclophosfamide treatment, chronic exposure to selected chemical substances (aniline, naftylamine, benziline), or sweetener abuse were involved [3][4][5][6][7].…”