Long term results of surgery for NSCLC and aortic invasion. A multicenter retrospective cohort study

Background: Aortic invasion from non-small cell lung cancers (NSCLC) is a relative contraindication to surgery for oncological and technical reasons. Only a few studies have been published showing good results. Our aim was to evaluate short and long-term results of surgery for T4 NSCLC with aortic resection. Methods: This is a multicenter retrospective study including 47 patients (33 males and 14 females) who received a major lung resection with aortic surgery in our centers between January 2000 and December 2016. Results: Adenocarcinoma was diagnosed in 31 patients (66.0%). Induction therapy was used in 14 patients. Pneumonectomy was performed in 34 patients (72.3%). A subadventitial dissection with or without endovascular stent graft was carried out in 40 patients (85.1%), a cardiopulmonary bypass was used in 3 patients and left heart bypass in 4. Intraoperatively, two patients had bleeding (4.3%) and one ventricular fibrillation (2.1%). Twenty-three patients (48.9%) experienced at least one postoperative complication. A radical resection was achieved in 39 patients (83.0%). Thirty-day and 90-day mortality were 2.1% and 4.3%. One-, 3- and 5-year overall survival were 85.1%, 57.4% and 53.2%. Overall and disease-free survivals were significantly influenced by pathological lymph node status and R status that were independent predictive factors for poorer survival at the multivariate analyses. Conclusions: Aortic resection during surgery for NSCLC is a challenging situation. Nevertheless, oncologic outcomes may be favorable in selected cases justifying a risky procedure that should be performed in experienced hands.