LATE RADIATION LESIONS OF URINARY BLADDER AND RECTUM IN PATIENTS WITH PROSTATE CANCER AFTER EXTERNAL RADIATION THERAPY AND PHOTOTHERAPY WITH LOW POWER NEAR INFRARED LASER
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The goal of this paper is to study the effect of phototherapy with near infrared laser on incidence of late radiation lesions of urinary bladder and rectum in patients with prostate cancer after external radiation therapy. The study was carried out at Department of New Technologies of Radiation Therapy. 559 patients with prostate cancer were treated with radiotherapy and hormonal therapy from January 2000 to June 2007. In 308 patients a "Lazernoe Solnyshko" laser apparatus was used (NIIEFA, λ = 890 nm, 45 mW, 10.8 J, duration of pulses 150 ns, frequency of pulses 3000 Hz, 16 radiating elements). The control group included 251 patients. Action of light was performed on the skin areas submitted to radiation therapy beginning from its 12th session during 4 minutes. In the control group the radiation damage of urinary bladder and rectum appeared in 7.6% and 10.7% of patients, while in the main group - in 1.95% and 2.92%, respectively (p < 0.01). Thus, the course of phototherapy with the near infrared low power laser at performance of radiotherapy decreases incidence of radiation damages of urinary bladder and rectum in patients with prostate cancer.
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