A clinical review with analysis of prognostic factors, including the i
mpact of the initial management modality, was conducted on 137 patient
s with superior vena cave syndrome (SVCS) seen at the Veterans General
Hospital-Taipei between 1989 and 1993. Malignant diseases account for
most of the SVCS in our Chinese patients. Patients received diagnosti
c intervention for their underlying diseases without obvious complicat
ions. Whether or not there is a development of SVCS in lung cancer pat
ients; showed prognostic significance in non-small cell lung cancer (N
SCLC) and no significance in small cell lung cancer (SCLC). Those with
SVCS as the initial manifestation of malignant disease had a poor pro
gnosis compared to those who developed SVCS later. Survival is best in
lymphoma/leukemia patients, followed by malignant thymoma and SCLC, a
nd worst in NSCLC and metastatic cancer. The rapid onset of symptoms f
rom SVCS had a short median survival in lung cancer and significantly
compromised survival in SCLC. The overall survival of SCLC with SVCS w
as not affected, regardless of whether the initial therapy had been ra
diotherapy or chemotherapy.