Objective: To compare the safety, effectiveness, and outcomes of primary stenting and salvage stenting for malignant superior vena cava obstruction.
Design: Case series with internal comparison.Setting: Regional hospital, Hong Kong.
Patients:A total of 56 patients with malignant superior vena cava obstruction underwent 59 stentings from 1 May 1999 to 31 January 2014. Patients' characteristics, procedural details, and outcomes were retrospectively reviewed. Of the 56 patients, 33 had primary stenting before conventional therapy and 23 had salvage stenting after failure of conventional therapy. Statistical analyses were made by Fisher's exact test and Mann-Whitney U test.Results: Primary lung carcinoma was the most common cause of malignant superior vena cava obstruction (primary stenting, 22 patients; salvage stenting, 16 patients; P=0.768), followed by metastatic lymphadenopathy. Most patients had superior vena cava obstruction only (primary stenting, 16 patients; salvage stenting, 15 patients; P=0.633), followed by additional right brachiocephalic vein involvement. Wallstents (Boston Scientific, Natick [MA], US) were used in all patients. Technical success was achieved in all but two patients, one in each group (P=1.000). Only one stent placement was required in most patients (primary stenting, 28 patients; salvage stenting, 20 patients; P=0.726). Procedure time was comparable in both groups (mean time: primary stenting, 89 minutes; salvage stenting, 84 minutes; Endovascular stenting in the management of malignant superior vena cava obstruction: comparing safety, effectiveness, and outcomes between primary stenting and salvage stenting New knowledge added by this study • Endovascular stenting is safe and effective for relieving malignant superior vena cava obstruction (SVCO) in both primary stenting and salvage stenting settings.• Direct comparison between primary stenting and salvage stenting for safety, effectiveness, and outcomes of superior vena cava (SVC) stenting showed no significant differences in number of stents required, success rates, procedure times, symptom relief rates, complication rates, and re-procedure rates between the two groups. Implications for clinical practice or policy • Primary SVC stenting should be considered for patients at their initial presentation with SVCO before conventional therapy by radiotherapy and/or chemotherapy.• Salvage SVC stenting remains a safe and effective treatment for patients with SVCO after failure of radiotherapy and/or chemotherapy.