Waller DA; Gower A; Kashyap AP; Conacher ID; Morritt GN. Carbon dioxide laser bronchoscopy--a review of its use in the treatment of malignant tracheobronchial tumours in 142 patients [see comments]. Respir Med 1994 Nov;88(10):737-41.

Abstract: We report our experience over an 8-yr period, 1984-1991, of the use of the carbon dioxide (CO2) laser in the treatment of otherwise inoperable malignant tracheobronchial lesions. In that period 142 patients (84 male, 58 female; median age 63 years) underwent 278 procedures. The trachea was the site of treatment in 44 patients, the carina in nine, a main bronchus in 80 and a lobar bronchus in nine. All resections were performed under general anaesthesia via a rigid bronchoscope. Symptomatic relief was obtained in 103 of the 116 patients whose main complaint was dyspnoea. Overall there was a mean improvement in forced expiratory volume in 1 s (FEV1) of 27%, in peak expiratory flow (PEF) of 22% and in forced vital capacity (FVC) of 7%. Most improvement in FEV1 and PEF was obtained by the treatment of tracheal lesions. Three patients died within 24 h of surgery and 30 day mortality was 18%. At a mean follow-up of 18.3 months the mean post-laser survival is 5 months. While the CO2 laser has limitations in the treatment of distal tumours when compared to the neodymium/yttrium aluminium garnet (Nd:YAG) laser, there was no higher incidence of complications. We have found CO2 laser bronchoscopy to be an effective palliation of inoperable malignant tumours particularly of the trachea and main bronchi.

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