OUTLINE: Treatment begins no sooner than 4 days and within 6 weeks after definitive surgery. All patients receive brachytherapy to the target volume (as defined by the excision cavity demarcated by post-tylectomy surgical clips plus 2 cm margin) using iridium-192 implants for dose distribution to five planes. Patients may be treated with either high-dose-rate or low-dose-rate brachytherapy at the institution's discretion. Patients are followed at 2 and 6 weeks after treatment, then at 3, 6, 9 and 12 months, then every 4 months for 1 year, every 6 months for 3 years, and then annually thereafter.