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The Journal of Thoracic and Cardiovascular Surgery, Vol 97, 732-736, Copyright © 1989 by The American Association for Thoracic Surgery and The Western Thoracic Surgical Association

ARTICLES

Laser-assisted parenchyma-sparing pulmonary resection

J LoCicero 3d, JW Frederiksen, RS Hartz and LL Michaelis
Department of Surgery, Northwestern University Medical School, Chicago, IL 60611.

The neodymium:yttrium-aluminum-garnet laser is an excellent tool for removing lesions while sparing surrounding normal tissue. Local excision of 32 pulmonary lesions in 26 patients was performed with the Nd:YAG laser. Fourteen patients had moderate to severe impairment of pulmonary function: average forced vital capacity = 2.2 +/- 0.3 L and forced expiratory volume in 1 second = 1.3 +/- 0.3 L. Limited thoracotomy was used in the last 23 patients. The resected lesions included 16 primary malignant tumors: nine adenocarcinomas, five squamous carcinomas, and two large cell carcinomas. Eight of these lesions were classified as T1 N0, seven were T2 N0; and one was T1 N2. There were 10 metastatic lesions: three lymphomas, two adenocarcinomas, two leiomyosarcomas, and one case each of melanoma, squamous cell carcinoma, and renal cell carcinoma. There were six benign lesions: three granulomas, two hamartomas, and one carcinoid. Twelve lesions were deep seated, could not have been removed by wedge resection or segmentectomy, and would have necessitated lobectomy without this technique. With the laser, the lesion could be precisely excised with minimal loss of lung parenchyma. Mean operating time was 80 +/- 20 minutes; laser resection time was 15 +/- 8 minutes. Resection necessitated 10,000 to 20,000 J. Total blood loss was minimal (less than 100 ml). Chest tubes were always used and remained in place 5 +/- 2 days. The mean hospitalization time was 10 +/- 2 days. Pulmonary function testing, perform 6 weeks to 6 months after discharge, showed no significant difference from preoperative levels. To date, there have been no local recurrences (longest follow-up 2 years). The Nd:YAG laser is an excellent adjunct for pulmonary resection in patients who have marginal pulmonary function or who have deep parenchymal lesions not amenable to wedge resection. The operative technique for laser resection is presented.

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