Past smokers quit at least 1 year before. The lung resection was always associated with systematic mediastinal lymphadenectomy. After surgery, four patients received adjuvant chemotherapy and two patients received radiation therapy. One patient submitted to lobectomy had been submitted to a previous, homolateral, lobectomy. The patient submitted to (lingular) segmentectomy had been previously submitted to bilobectomy. Pathological staging was established according to the Eighth Edition of the IASLC TNM Staging System for Lung Cancer.