Objective To evaluate the efficacy and safety of CT-guided percutaneous radiofrequency ablation (RFA) as an alternative for video-assisted thoracoscopic surgery (VATS) in treating multiple pulmonary nodules. Methods A retrospective analysis was conducted on the clinical data of 113 patients with multiple pulmonary nodules admitted to Jiangsu Provincial Hospital of Traditional Chinese Medicine from October 2020 to October 2022. The patients were divided into the RFA group (n＝50) and the VATS group (n＝63) based on the treatment method. Perioperative indicators (operation time, intraoperative blood loss, postoperative length of hospital stay), oncological outcomes (recurrence-free survival [RFS], overall survival [OS]), and postoperative complication rates were compared between the two groups. Univariate and multivariate Cox regression analysis was performed to identify independent prognostic factors. Results The operation time in the RFA group was significantly shorter than that in the VATS group ([75.2±20.1] min vs [102.3±28.7]) min, P＜0.001). No statistically significant differences were observed in intraoperative blood loss and postoperative length of hospital stay. After follow-up of 24 (12, 30) months, no statistically significant differences were found in RFS (HR＝1.25, P＝0.445) or OS (HR＝1.42, P＝0.402) between the two groups. Mixed ground-glass nodules with high solid component and solid nodule were identified as independent risk factors for RFS (HR＝2.44, P＝0.023; HR＝2.97, P＝0.007) and OS (HR＝2.87, P＝0.022; HR＝3.43, P＝0.005) in patients with multiple pulmonary nodules. The total complication rate in the RFA group was lower than that in the VATS group (12.0% vs 34.9%, P＝0.009). Conclusions The efficacy of CT-guided RFA in treating multiple pulmonary nodules is comparable to that of VATS, with good safety, and it shows promise as an alternative to surgical treatment for multiple pulmonary nodules.

Objective:To investigate the efficacy and feasibility of radiofrequency resection of supraglottic laryngeal carcinoma under a multifunctional opener.Methods:The clinical data of four cases of supraglottic laryngeal carcinoma (type T1N1M0 in two cases, T2N1M0 in one case, and T1N0M0 in one case) who received treatment in the Affiliated Hospital of Jining Medical University during January-June 2019 were retrospectively analyzed. Radiofrequency resection of supraglottic laryngeal carcinoma under a multi-functional opener combined with bilateral neck II-IV region lymph node dissection was performed. Swallowing, breathing and phonation were observed and analyzed based on references.Results:Among the four cases, two cases had a normal diet at 3 days after surgery, one case had a normal diet at 7 days after surgery, and one case had a normal diet at 16 days after surgery. Tracheotomy was not performed in any case. After surgery, breathing and speech communication were not affected.Conclusion:Radiofrequency surgery under a multifunctional opener can be used for treatment of early supraglottic laryngeal cancer. It is an effective treatment with minimal trauma, mild postoperative pain and promotes the early recovery of normal swallowing function.