Technique
tumor
DISEASE, TUMOR, PATHOLOGY
In the surgical group, the N1 lymph nodes were dissected from the center to the periphery. The parenchyma was dissected over the most central bronchus (lobe bronchus for lobectomy, main bronchus for pneumonectomy) towards the periphery. Care was taken not to damage the integrity of the bronchial tree during dissection and to completely remove N1 lymph nodes. After surgical back table dissection, the removed lymph nodes were placed in formaldehyde and sent to the pathology laboratory.N1 lymph node dissection was similarly performed in the pathology group by the pathologist. While the parenchyma was dissected towards the periphery over the most central bronchus, unlike in the surgical group, the bronchus was cut and the lymph nodes were dissected by moving distally over the bronchial tree. However, the specimens of the patients in this group were exposed to formaldehyde solution before dissection.Patients’ age, sex, number of lymph node dissections, N1 positivity and the number of N1 positive lymph node stations, tumor dimensions, tumor status, and stages according to the 8th TNM system, histological types, tumor differentiation, visceral pleura involvement, type of resection, operation side, follow-up period, and survival were analyzed. In terms of N1 involvement, groups with no pathological N1 disease, single N1, or multiple N1 were examined for survival. Adjuvant chemotherapy was prescribed in our institution according to the oncology council decision. Adjuvant chemotherapy was recommended for patients with N1 disease and evaluated on a case-by-case basis in T3/4 patients. Cisplatin + vinorelbine combination was used as a standard regimen for patients requiring adjuvant chemotherapy in the absence of contraindications.