Đặc điểm hình ảnh di căn phổi trên cắt lớp vi tính và kết quả đốt sóng cao tần điều trị di căn phổi dưới hướng dẫn của Robot Maxio

Abstract

Objective: To characterize the imaging features of pulmonary metastases on computed tomography (CT) and to evaluate the outcomes of radiofrequency ablation (RFA) for pulmonary metastases using Maxio robot guidance.

Materials and Methods: The study was a combined prospective and retrospective descriptive analysis conducted on 60 patients with pulmonary metastatic lesions, of whom 30 underwent radiofrequency ablation (RFA) under the guidance of the Maxio robotic system at the 108 Military Central Hospital between June 2021 and June 2025

Results: Regarding the number of metastatic pulmonary nodules, multiple lesions were more common than solitary nodules. In terms of location, metastatic nodules were frequently found in the right upper lobe and the lower lobes of both lungs. The most common primary malignancies were breast and liver cancers. The mean tumor diameter was 25 ± 4.5 mm. Of the 60 metastatic lesions, 55 presented with smooth and well-defined margins, and 52 were solid nodules. Nineteen patients underwent a single RFA session, seven patients underwent two sessions, and four patients underwent three sessions. Disease control was achieved in 26 out of 30 patients, with tumor necrosis confirmed at 6-month follow-up. Seven of 25 patients required a second ablation, and four required a third ablation. One case of massive hemoptysis occurred, posing a life-threatening complication.

Conclusion: Pulmonary metastatic lesions typically present as multiple, solid nodules with smooth margins, commonly located in the lower lobes of both lungs and the right upper lobe. Radiofrequency ablation of pulmonary metastases under Maxio robotic guidance demonstrated favorable initial efficacy with a low complication rate.

Keywords: Radiofrequency ablation, pulmonary metastases, computed tomography