Role of video-assisted thoracoscopic surgery in pulmonary metastasectomy

Introduction
There are sparse prospective studies investigating the role of video-assisted thoracoscopic surgery (VATS) in management of pulmonary metastasis.

Aim
To prospectively investigate short-term surgical and pathological outcomes for PM patients operated on by VATS or open thoracotomy (OT) for management of lung secondaries.

Material and methods
Between October 2017 and December 2020, patients undergoing pulmonary metastasectomy were recruited. Patients were assigned to undergo resection with either thoracotomy (group 1) or VATS (group 2) after multidisciplinary team discussions based on the number, size and location of pulmonary metastasis and underlying lung function. All related short-term surgical and pathologic outcomes for both groups were collected for analysis.

Results
Of 58 patients enrolled, 21 were in group 1 and 37 in group 2. Colorectal cancer primary represented 40% of the cases. Patients in the VATS group were more likely to have solitary lesions that are peripherally located and removed by wedge resection, as opposed to patients in the thoracotomy group, who had more anatomical lung resections. More new nodules were likely to be detected during surgery in thoracotomy than VATS cases (p = 0. 027). However, 8 (out of 15) of the newly detected lesions were not malignant. Operative time, blood loss and hospital stay were in favor of VATS procedures.

Conclusions
In a highly selected cohort of pulmonary metastasis patients with favorable criteria (peripherally located, small, solitary/oligo-metastasis and cN0), VATS may provide acceptable onco-pathologic outcomes as compared to the standard open thoracotomy.