Stage IIIA-N2 non-small cell lung cancer (NSCLC) represents a heterogeneous group of bronchogenic carcinomas with locoregional involvement. Different categories of N2 disease exist, ranging from unexpectedly encountered N2 involvement after detailed preoperative staging or 'surprise' N2, to potentially resectable disease treated within a combined modality setting, and finally, bulky N2 involvement treated by chemoradiation. Areas covered: Large randomised controlled trials and meta-analyses on stage IIIA-N2 NSCLC have been published but their implications for treatment remain a matter of debate. No definite recommendations can be provided as diagnostic and therapeutic algorithms vary according to local, national or international guidelines. Expert commentary: From the literature, it is clear that patients with stage IIIA-N2 NSCLC should be treated by combined modality therapy including chemotherapy, radiotherapy and surgery. The relative contribution of each modality has not been firmly established. For patients undergoing induction therapy, adequate restaging is important as only down-staged patients will clearly benefit from surgical resection. Each patient should be discussed within a multidisciplinary team to determine the best diagnostic and therapeutic approach according to the specific local expertise. In the near future, it might be expected that targeted therapies and immunotherapy will be incorporated as possible therapeutic options.
Robotic-assisted videothoracoscopic surgery (R-VATS) has become increasingly popular and widely-used since its introduction and is nowadays considered a standard treatment approach in many centres for the treatment of non-small cell lung cancer. R-VATS was initially developed to overcome the drawbacks of VATS by offering surgeons more flexibility and three-dimensional optics during thoracoscopic surgery. The effectiveness of R-VATS lobectomy regarding oncological outcomes, morbidity, mortality, and postoperative quality of life (QoL) has been shown in an increasingly number of studies. More recently, these results have also been corroborated for sublobar resections, more specifically for segmentectomy.However, no well-powered, multi-centre randomised trials have been performed to demonstrate the superiority of R-VATS compared to open surgery or conventional types of VATS (total VATS, uniportal VATS, etc.). The majority of the evidence currently available is based on non-randomised studies and many studies report conflicting results when comparing R-VATS and conventional VATS. Moreover, there is a lack of data regarding the cost and the cost efficiency of robotic surgery compared to VATS and open surgery. Current evidence suggests that R-VATS costs are higher than VATS and that a deficit can only be prevented when up to 150-300 thoracic surgery procedures are performed annually. Finally, robotic-assisted laparoscopic surgery showed better ergonomics and reduced musculoskeletal disorders compared to non-robotic laparoscopic surgery.
In the last two decades, robotic-assisted approaches have gained popularity as alternatives to conventional open and minimal-invasive surgery (MIS). The robotic approach combines the concepts of the traditional MIS with the latest technological advancements, enabling the surgeon to control the instrumentation using a robotic device connected to a remote console. With this approach, the surgeon obviates the known drawbacks of conventional MIS, such as the reduced in-depth perception and hand-eye coordination. Since its introduction, numerous robotic-assisted procedures have been developed and tested across nearly all surgical fields. Data from previous studies have shown that a great majority of these techniques are feasible and have favourable treatment outcomes. In the field of thoracic and vascular surgery, two disciplines often combined in Belgium, robotic approaches have been implemented in the treatment of a wide array of disorders including lung cancer, mediastinal tumours, thoracic outlet syndrome, diaphragmatic paralysis, sympathectomy, aortobifemoral bypass surgery and division of the arcuate ligament for median arcuate ligament syndrome (MALS). Despite this increasing popularity, there are still a number of controversies regarding robotic surgery. There are only limited data on the cost-effectiveness of robotic surgery and its objective proven benefit over conventional MIS. In this review, we summarise the latest data on robotic approaches for the most relevant thoracic and vascular disorders.
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