Safety of Simultaneous Bilateral Pulmonary Resection for Metastatic Lung Tumors

Aim: We investigated the safety of simultaneous bilateral lung resection for lung metastases. Patients and Methods: We retrospectively analyzed 185 patients with pulmonary metastases who underwent unilateral or bilateral pulmonary resection from August 2009 to December 2016 at a single institution. Results: Single-stage bilateral lung resection was undertaken in 19 patients, and the other 166 patients underwent unilateral pulmonary resection, including 20 patients who underwent repeated resections for synchronous or metachronous metastases. Operative time and drainage days in the bilateral group were significantly longer than those in the unilateral group (220±20 vs. 152±6.9 min: p<0.01, and 2.79±0.3 vs. 2.08±0.1 days: p<0.01). Incidence of postoperative complications and postoperative in-hospital days did not differ between the two groups (p=0.33 and 0.66, respectively). The bilateral group was further divided into two groups, namely, those who underwent wedge resection on both sides (WW) and those who underwent wedge resection on one side and segmentectomy or lobectomy on an opposite side (WSL). Operative time in the WSL group was significantly longer than that in the WW group (260±19 vs. 201±18 min: p=0.03). However, there was no significant difference in duration of chest tube use and postoperative hospital days between the two groups (p=0.26 and p=0.89). No severe postoperative complications occurred in either group. Conclusion: One-stage bilateral pulmonary metastasectomy appears to be safe as long as only wedge resection is performed on at least one side.

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