Table 3. Details of medical treatment received by patients with PTSS.

	Details: n (%)	Median PFS (95% confidence interval)
First-line medical treatment	Total = 21 (1) Curative Ifosfamide-doxorubicin: 17 (80.9%) (2) Palliative Doxorubicin: 3 (14.2%) High-dose ifosfamide: 1 (4.7%)	12 (9.3–14.6)
Second-line medical treatment	Total = 12 Pazopanib: 5 (41.6%) Gemcitabine docetaxel: 3 (25%) High-dose ifosfamide: 2 (16.6%) Doxorubicin: 1 (8.3%) Gemcitabine: 1 (8.3%)	3 (1.4–4.5)
Third-line medical treatment	Total = 8 Pazopanib: 3 (37.5%) Trabectedin: 3 (37.5%) High-dose ifosfamide: 1 (12.5%) Regorafenib: 1 (12.5%)	7 (3.6–10.4)
Fourth-line medical treatment	Total = 4 Regorafenib: 1 (25%) Anlotinib: 1 (25%) Pazopanib: 1 (25%) Trabectedin: 1 (25%)	3 (1.0–4.9)

PTSS: Primary thoracic synovial sarcoma