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J Thorac Cardiovasc Surg 2006;131:1236-1242
© 2006 The American Association for Thoracic Surgery

General Thoracic Surgery

Is surgery for multiple lung metastases reasonable? A total of 328 consecutive patients with multiple-laser metastasectomies with a new 1318-nm Nd:YAG laser

^a Department of Thoracic and Vascular Surgery, Coswig Specialised Hospital, Center for Pneumology and Thoracic Surgery, University Medical Center, Coswig/Dresden, Germany
^b Department of Informatics, Carl Gustav Carus University, Dresden, Germany.

Received for publication June 20, 2005; revisions received November 17, 2005; accepted for publication November 28, 2005.

^_* Address for reprints: Axel Rolle, MD, PhD, Department of Thoracic and Vascular Surgery, Coswig Specialised Hospital, Center for Pneumology and Thoracic Surgery, Affiliated to the Carl Gustav Carus University Dresden, Neucoswiger Straße 21, D-01640 Coswig/Dresden, Germany (Email: dr.rolle{at}fachkrankenhaus-coswig.de).

OBJECTIVE: Our objective was to define the role of a new 1318-nm Nd:YAG laser for lobe- and parenchyma-saving resection of multiple lung metastases.

PATIENTS AND METHODS: From January 1996 to December 2003, a total of 3267 nodules (10/patient) were removed from 328 patients (164 men/164 women, mean age 61 years). Criteria for eligibility were expanded to any primary tumors with no upper limit of metastases given. All parenchymal resections were performed with a new 1318-nm Nd:YAG laser whose effect on lung tissue differs significantly from that of the 1064-nm wavelength owing to a 10-fold higher absorption in water and one-third extinction in blood. In 93%, precision laser resection was achieved. The lobectomy rate was only 7%.

RESULTS: Pathologic examination revealed 2546 metastases (8/patient) and lymph node disease in 19%. Complete resections (R0) were achieved in 93% of 177 patients undergoing unilateral procedures with a mean of 3 metastases (range 1%-29%) and 75% of 151 patients having bilateral operations with a mean of 13 metastases (range 2-124). The 5-year survival after R0 was 55% for solitary nodules, 41% for all patients, 28% for 10 metastases, and 26% for 20 or more metastases resected. Outcome was significantly poorer after incomplete resection (7%). No 30-day mortality was observed. Major postoperative complications included prolonged air leaks (n = 2), intrapleural bleeding (n = 2), and late pneumothorax (n = 2); all were treated successfully with a chest tube.

CONCLUSION: This new 1318-nm Nd:YAG laser facilitates complete resection of multiple bilateral centrally located metastases and thus is lobe sparing. Resection of 20 or more metastases is reasonable because long-term survival was significantly better than that observed with incomplete resection.

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