Persistent right jugular lymph sac simulating cervical tumor.

A patient who had had trauma to the right shoulder and upper chest complained of a right supraclavicular mass. Examination revealed a cystic tumor made larger by performance of the Valsalva maneuver. Angiocardiography demonstrated that there was partial stenosis of the terminal end of the right innominate vein. This and the Valsalva manenvnr were responsible for the filling of a right persistent jugular lymph sac that simulated a cervical tumor.