RT Journal Article SR Electronic T1 Recurrence of thymoma presenting as a superior vena cava syndrome JF Heart JO Heart FD BMJ Publishing Group Ltd and British Cardiovascular Society SP 433 OP 433 DO 10.1136/hrt.81.4.433 VO 81 IS 4 A1 P LEFEBVRE A1 A LELEUX A1 C PHILIPPART YR 1999 UL http://heart.bmj.com/content/81/4/433.abstract AB