Radiology, Vol 201, 279-282, Copyright © 1996 by Radiological Society of North America

ARTICLES

Endobronchial brachytherapy with high-dose-rate remote afterloading for recurrent endobronchial lesions

ME Delclos, R Komaki, RC Morice, PK Allen, M Davis and A Garden
Department of radiotherapy, University of Texas, M.D. Anderson Cancer Center, Houston, TX 77030, USA.

PURPOSE: To evaluate toxicity and efficacy of endobronchial brachytherapy with high-dose-rate (HDR) after-loading of iridium-192 for recurrent endobronchial lesions. MATERIALS AND METHODS: From 1988 to 1993, 81 patients with lung cancer previously treated with external beam radiation therapy were treated with palliative HDR endobronchial brachytherapy for symptoms due to relapse or persistent tumor of endobronchial bronchogenic origin. For most patients, Ir-192 was delivered in a dose of 3,000 cGy at 6 mm in two fractions over 2 weeks. RESULTS: Sixty-eight patients (84%) achieved some response: Twenty-six (32%) had excellent, 25 (31%) had moderate, and 17 (21%) had minimal symptomatic improvement with HDR endobronchial brachytherapy. Eleven patients had no change, and two became worse. The median duration of responses was 4.5 months. Those patients with an excellent response had a significantly better survival (13.3 months) compared with that of the other patients (5.4 months) (P = .01). There were two fatal complications, which were due to fistula and tracheal malacia. CONCLUSION: HDR endobronchial brachytherapy is an effective method to relieve airway obstruction promptly for patients with recurrent endobronchial lesions and may be considered as a boost for obstructive lesions before chemotherapy and external beam radiation therapy.

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