A Systematic Review of Short-Term Outcomes of Minimally Invasive Thoracoscopic Surgery for Lung Cancer after Neoadjuvant Systemic Therapy

SIMPLE SUMMARY: Non-small cell lung cancers (NSCLCs) can be treated with chemotherapy, radiotherapy, immunotherapy, or a combination before undergoing surgical resection. However, uncertainty remains regarding the overall outcomes of patients undergoing minimally invasive surgical (MIS) resection of the lung, following systemic treatment. As such, we studied the existing data on outcomes of this patient population via a comprehensive dive into the literature and performed a meta-analysis. Our findings indicate that MIS can be safely performed following systemic treatment in patients with NSCLC. Notably, MIS resection offers added benefits including significantly higher lymph node yield compared to open surgery. We also address the various complication rates of both open and MIS surgical approaches, underscoring the importance of surgeon preparedness to convert MIS approaches to open surgeries in precarious circumstances. Overall, this study provides valuable insights into the safety and efficacy of MIS resection post-systemic treatment for patients with NSCLC, offering potential improvements in patient outcomes and guidance to surgical decision making. ABSTRACT: Background: Minimally invasive surgeries for non-small cell lung cancers (NSCLCs) such as video-assisted thoracoscopic surgeries (VATSs) and robotic-assisted thoracoscopic surgeries (RATSs) have become standard of care for patients needing surgical resection in early stages. The role for neoadjuvant systemic therapy has increased with patients receiving neoadjuvant systemic chemotherapy and immunotherapy. However, there has been some equipoise over the intraoperative and overall outcomes for these patients. Here, we review the current data regarding outcomes of patients undergoing minimally invasive thoracic surgical resection after systemic chemotherapy, immunotherapy, or both. Methods: A systematic literature review of randomized controlled trials and observational studies presenting data on patients with NSCLC that underwent neoadjuvant systemic therapy followed by minimally invasive surgery was performed assessing complications, conversion rates, and lymph node yield. Results: Our search strategy and review of references resulted in 239 publications to screen with 88 full texts assessed and 21 studies included in our final review. VATS had a statistically significant higher lymph node yield in five studies. The reported conversion rates ranged from 0 to 54%. Dense adhesions, bleeding, and difficult anatomy were the most common reported reasons for conversion to open surgeries. The most common complications between both groups were prolonged air leak, arrythmia, and pneumonia. VATS was found to have significantly fewer complications in three papers. Conclusions: The current literature supports VATS as safe and feasible for patients with NSCLC after neoadjuvant systemic treatment. Surgeons should remain prepared to convert to open surgeries in those patients with dense adhesions and bleeding risk.