Primary Synovial Sarcomas of the Mediastinum: A Systematic Review and Pooled Analysis of the Published Literature

Table 3

Univariate analysis for the 30 cases of mediastinal synovial sarcoma with available follow-up data.

Variable	Number (%)	MS (months)	5-year OS	Log-Rank 𝑃 value
Age
≥20 years	24 (80%)	38	39.9%	0.32
<20 years	6 (20%)	24	31.3%
Gender
Male	24 (80%)	Unreached	56.2%	0.91
Female	6 (20%)	36 months	0%
Pericardial effusion
Yes	4 (13%)	Unreached	67%	0.83
No	26 (87%)	36 months	29%
Histologic subtype
Monophasic	10 (33%)	24 months	0%	0.11
Biphasic	10 (33%)	36 months	50.0%
ND	10 (33%)
Size
<10 cm	8 (26%)	Unreached	75%	0.36
≥10 cm	11 (37%)	36 months	26%
ND	11 (37%)
Surgery
Complete resection	17 (57%)	Unreached	63%	0.003
Incomplete	13 (43%)	13 months	0%
Chemotherapy
Yes	14 (47%)	36 months	46%	0.31
No	16 (53%)	24 months	24%
Radiotherapy
Yes	14 (47%)	36 months	21%	0.89
No	16 (53%)	unreached	53%
Location in mediastinum
Anterior/middle	22 (74%)	36 months	39%	0.93
Posterior	4 (13%)	6 months	50%
ND	4 (13%)

MS: median survival; OS: overall survival; ND: no data.