The jugular phlebectasia is an infrequent anomaly in which a jugular dilatations of the jugular vein during the Valsalva manoeuvre is the main characteristic. We report a case of a 7 years old male with an internal jugular phlebectasia manifestating as a latero-cervical right mass expanding with Valsalva manoeuvre. After the first initial echographic study, we recommend angio-TAC helicoidal as an useful test to confirm the diagnosis, it is also useful to get a tridimensional reconstruction of the jugular anomaly as well as establish the extension and possible complication. Jugular phlebectasia is a benign entity, usually it doesn't progress and causes a minimal estatic defect, therefore it is recommended to avoid any surgical resection or drapping. Periodical follow up is the best choice.