Primary pleural surgery (Scenario 2): There was 6 thymomectomies, 1 thymomectomy combined with basic thymectomy (removal of the thymic lobes) and 64 thymomectomies in conjunction with extended thymectomies. There were 3 recurrences after thymomectomy only (50%), after thymomectomy plus basic thymectomy 1 (100%) and thymomectomy combined with extended thymectomy 26 (49.0%).