Abstract:Objective To evaluate the safety and effectiveness of 3D printing combined with fluorescence thoracoscopy in anatomical segmentectomy.Methods The 108 patients who underwent segmentectomy at Beijing Aerospace General Hospital from June 2022 to June 2023 were selected, and propensity score matching (PSM) was performed in a 1 : 2 ratio. Thirty-three cases were included in the experimental group (segmentectomy guided by 3D printing combined with fluorescence thoracoscopy), and 75 cases were included in the control group (3D reconstruction-guided anatomical segmentectomy). The perioperative indicators, pulmonary function, and complications were compared between the two groups.Results Compared with the control group, the operative duration, the duration of drain placement, and the postoperative length of hospital stay were shorter (P < 0.05), the intraoperative blood loss was less (P < 0.05), and the number of lymph nodes dissected was greater in the experimental group (P < 0.05). There was no statistical difference between the two groups in the incidence of adverse reactions (P > 0.05), or in the preoperative forced vital capacity percent predicted (FVC%pred), forced expiratory volume in one second percent predicted (FEV1%pred), and maximum voluntary ventilation percent predicted (MVV%pred) (P > 0.05). The FVC%pred, FEV1%pred and MVV%pred 3 days after surgery were higher in the experimental group compared with the control group (P < 0.05).Conclusions The 3D-printed pulmonary vascular-tracheal-nodule-margin sphere model combined with fluorescence thoracoscopy is safe and effective, enabling accurate localization and rapid identification of intersegmental planes, making it highly recommended for broader clinical application.