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Background: To investigate the distribution pattern of V1+2d in the left superior pulmonary vein and its clinical significance. Methods: A retrospective analysis was conducted using three‐dimensional computed tomographic bronchography and angiography (3D‐CTBA) data from 500 lung cancer patients. Statistical analyses were performed to evaluate the incidence and drainage patterns of the three sub‐branches of V1+2d, namely V1+2d1, V1+2d2 and V1+2d3. Furthermore, clinical data from 10 patients' lesions involving V1+2d were reviewed to illustrate the impact of adjacency to V1+2d on the surgical approach. Results: The incidences of V1+2d1, V1+2d2 and V1+2d3 were 100%, 76.4% and 100% respectively. The relative interlobar distribution sizes of B3a and B1+2c and the left upper division (LUD) vein type influenced the incidence of V1+2d2 (p < 0.05; p < 0.001). V1+2d2 predominantly occurred in B3a = B1+2c and B1+2c > B3a patterns. V1+2d2 was entirely absent in the B3a > B1+2c pattern. V1+2d2 exhibited a higher incidence in both the central vein (CV) type and the noncentral vein (NCV) type when compared to the semi‐central vein (SCV) type (100% vs. 100% vs. 64.8%). The most prevalent venous drainage pattern was the three sub‐branches of V1+2d constituting a major trunk to drain (41.2%). All 10 cases with lesions involving V1+2d successfully underwent sublobar resection with no complications, and the surgical margin was ≥2 cm. Conclusions: The three sub‐branches of V1+2d exhibit a high incidence with diverse distribution patterns, yet a discernible pattern exists. For inter‐ or multi‐intersegmental nodules involving V1+2d, combined segmentectomy and subsegmentectomy or combined subsegmentectomy can ensure the safe margin. [ABSTRACT FROM AUTHOR]

This paper analyzed the results of a modified and simpler technique for distinguishing the intersegmental border during lung segmentectomy surgery. From January 2013 to December 2015, 539 patients with screening‐detected lung nodules <2 cm in maximum diameter underwent anatomic segmentectomy. With the guidance of preoperative three‐dimensional computed tomography bronchography and angiography, the bronchus, artery, and intrasegmental vein of the targeted segment could be precisely dissected under unilateral differential ventilation, and then intersegmental demarcation was confirmed by the modified inflation‐deflation method. The demarcation presented by this method was highly coincident with the real intersegmental border. Dissection along the border between the collapsed and inflated segments using either electrocautery or staples was safe, with almost no air leak or bleeding. This technique is a simple and effective alternative to previously described intersegmental border marking methods. [ABSTRACT FROM AUTHOR]

Background: To investigate the distribution pattern of V 1+2 d in the left superior pulmonary vein and its clinical significance., Methods: A retrospective analysis was conducted using three-dimensional computed tomographic bronchography and angiography (3D-CTBA) data from 500 lung cancer patients. Statistical analyses were performed to evaluate the incidence and drainage patterns of the three sub-branches of V 1+2 d, namely V 1+2 d1, V 1+2 d2 and V 1+2 d3. Furthermore, clinical data from 10 patients' lesions involving V 1+2 d were reviewed to illustrate the impact of adjacency to V 1+2 d on the surgical approach., Results: The incidences of V 1+2 d1, V 1+2 d2 and V 1+2 d3 were 100%, 76.4% and 100% respectively. The relative interlobar distribution sizes of B 3 a and B 1+2 c and the left upper division (LUD) vein type influenced the incidence of V 1+2 d2 (p < 0.05; p < 0.001). V 1+2 d2 predominantly occurred in B 3 a = B 1+2 c and B 1+2 c > B 3 a patterns. V 1+2 d2 was entirely absent in the B 3 a > B 1+2 c pattern. V 1+2 d2 exhibited a higher incidence in both the central vein (CV) type and the noncentral vein (NCV) type when compared to the semi-central vein (SCV) type (100% vs. 100% vs. 64.8%). The most prevalent venous drainage pattern was the three sub-branches of V 1+2 d constituting a major trunk to drain (41.2%). All 10 cases with lesions involving V 1+2 d successfully underwent sublobar resection with no complications, and the surgical margin was ≥2 cm., Conclusions: The three sub-branches of V 1+2 d exhibit a high incidence with diverse distribution patterns, yet a discernible pattern exists. For inter- or multi-intersegmental nodules involving V 1+2 d, combined segmentectomy and subsegmentectomy or combined subsegmentectomy can ensure the safe margin., (© 2023 The Authors. Thoracic Cancer published by John Wiley & Sons Australia, Ltd.)