Table 1 Patients’ characteristics

Gender: Male (67/73 (91.7%))

Age: Mean 69 (SD ± 10.4).

Time to recurrence: 23 (IQR: 11.5–49).

CT findings:

 Isolated mediastinal lymphadenopaties: 50 (68.5%)

 Mediastinal lymphadenopaties & lung nodules/masses: 23 (31.5%)

Stage:

 IA: 26 (35.6%)

 IB: 17 (23.3%)

 IIA: 12 (16.4%)

 IIB: 13 (17.8%)

 IIIA: 4 (5.5%)

 IV: 1 (1.4%)

Surgical treatment:

 Lobectomy 48 (65.7%)

 Bilobectomy 3 (4.1%)

 Neumonectomy 8 (11%)

 Wedge resection 14 (19.2%)

Systematic mediastinal nodal dissection:

 Linfadenectomy: 58 (79.5%)

 Nodes diseccted: 14.5 (IQR: 11–20.75)

 Stations diseccted: 4.5 (±1)

Previous mediastinoscopy: 6 (8.2%)

Previous EBUS: 20 (27.4%)

Previous treatment:

 Surgery 47 (64.4%)

 Adyuvant chemotherapy 16 (21.9%)

 Adyuvant radiotherapy 1 (1.4%)

 Trimodal treatment 9 (12.3%)