OBJECTIVE: To compare the safety, effectiveness, and outcomes of primary stenting and salvage stenting for @entity4264 . DESIGN: Case series with internal comparison. SETTING: Regional hospital, Hong Kong. @entity1 : A total of 56 @entity1 with @entity4264 underwent 59 stentings from 1 May 1999 to 31 January 2014. @entity1 ' characteristics, procedural details, and outcomes were retrospectively reviewed. Of the 56 @entity1 , 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 @entity2 was the most common cause of @entity4264 (primary stenting, 22 @entity1 ; salvage stenting, 16 @entity1 ; P=0.768), followed by metastatic lymphadenopathy. Most @entity1 had superior vena cava obstruction only (primary stenting, 16 @entity1 ; salvage stenting, 15 @entity1 ; P=0.633), followed by additional right brachiocephalic vein involvement. Wallstents (Boston Scientific, Natick [MA], US) were used in all @entity1 . Technical success was achieved in all but two @entity1 , one in each group (P=1.000). Only one stent placement was required in most @entity1 (primary stenting, 28 @entity1 ; salvage stenting, 20 @entity1 ; P=0.726). Procedure time was comparable in both groups (mean time: primary stenting, 89 minutes; salvage stenting, 84 minutes; P=0.526). Symptomatic relief was achieved in most @entity1 (primary stenting, 32 @entity1 ; salvage stenting, 23 @entity1 ; P=0.639). In-stent restenosis and @entity548 were the commonest complications (primary stenting, 6 and 1 @entity1 , respectively; salvage stenting, 2 and 2 @entity1 , respectively). Nine @entity1 required further treatment for symptom recurrence (primary stenting, 6 @entity1 ; salvage stenting, 3 @entity1 ; P=0.725). CONCLUSION: Endovascular stenting is safe and effective for relieving @entity4264 . No statistically significant differences in number of stents, success rates, procedure times, symptom relief rates, complication rates, and re-procedure rates were found between primary stenting and salvage stenting.

Endovascular stenting in the management of XXXX : comparing safety, effectiveness, and outcomes between primary stenting and salvage stenting.

@entity1 :: ('9606', 'Species') :: ['Patients', 'patients', 'PATIENTS'] @entity4264 :: ('MESH:D013479', 'Disease') :: ['malignant superior vena cava obstruction'] @entity2 :: ('MESH:D008175', 'Disease') :: ['lung carcinoma'] @entity548 :: ('MESH:D006470', 'Disease') :: ['bleeding']
@entity4264 :: (MESH:D013479,Disease) :: ['malignant superior vena cava obstruction']
