A frozen section on the segmental nodes should be performed in all cases (with the exception of pure GGO lesions or patient unfit for lobectomy), and in case of a positive node found at frozen section examination, the segmentectomy should be extended to lobectomy. Keywords: Segmentectomy; Sublobar resection; Non-small-cell lung cancer; Operative technique; Quality; Guidelines EN Segmentectomy Sublobar resection Non-small-cell lung cancer Operative technique Quality Guidelines 1 13 13 07/04/23 20230601 NES 230601 INTRODUCTION The recent findings from the JCOG0802 and CALGB randomized control trials [[1]] have corroborated previous observational reports series [[3], [5], [7]] showing favourable short-term and long-term results of segmentectomy in patients operated for peripheral (outer third of the lung), early-stage non-small-cell lung cancer (NSCLC) (2 cm or less). There was consensus among the panellists in this study to the statement: in case of unexpected positive station lymph nodes stations 10 or mediastinal lymph nodes node found only on the final pathological report, the patient should be referred to adjuvant chemotherapy and NOT for completion lobectomy with 79% and 89% agreement. Similarly, in a series of 1991 lepidic adenocarcinomas submitted to either lobectomy or segmentectomy, survival was significantly better after lobectomy, except in the sublobar resections subgroup associated with lymph node dissection [[50]]. In addition, some studies have shown that a larger number of sampled lymph nodes during segmentectomy is associated with a higher rate of metastatic lymph nodes (>6 nodes associated with 9.4% positive ones vs 6 or less nodes sampled associated with 1.5% positive nodes) and better survival at 5-year [[48]]. [Extracted from the article]