Survival analysis: comparison of primary pleural surgery and pleural surgery for recurrence: OS (A), FFR (B), type of surgery: EPP vs TP vs LP: OS (C), FFR (D), thymoma vs TC: OS (E), FFR (F), and completeness of resection: OS (G), FFR (H). EPP: extrapleural pneumonectomy; TP: total pleurectomy; LP: local pleurectomy; TC: thymic carcinoma.