Internal jugular phlebectasia.

Internal jugular phlebectasia or abnormal fusiform dilatation of the jugular venous system usually presents as a neck mass that increases in size with maneuvers, which increase intrathoracic pressure. We present a case of internal jugular phlebectasia in which, due to an atypical presentation, the diagnosis was confirmed only by surgical exploration. The pathophysiology and radiologic evaluation are discussed to determine the role reserved for surgery in the management of this entity.