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Ozone Therapy in the Management of Persistent Radiation

Introduction. Persistent radiation-induced proctitis and rectal bleeding are debilitating complications with limited therapeutic options. We present our experience with ozone therapy in the management of such refractory rectal bleeding. Methods. Patients (𝑛 = 12) previously irradiated for prostate cancer with persistent or severe rectal bleeding without response to conventional treatment were enrolled to receive ozone therapy via rectal insu ations and/or topical application of ozonized-oil. Ten (83%) patients had Grade 3 or Grade 4 toxicity. Median follow-up a er ozone therapy was 104 months (range: 52–119). Results. Following ozone therapy, the median grade of toxicity improved from 3 to 1 (𝑝 < 0.001) and the number of endoscopy treatments from 37 to 4 (𝑝 = 0.032). Hemoglobin levels changed from 11.1 (7–14) g/dL to 13 (10–15) g/dL, before and a er ozone therapy, respectively (𝑝 = 0.008). Ozone therapy was well tolerated and no adverse e ects were noted, except so and temporary atulence for some hours a er each session. Conclusions. Ozone therapy was e ective in radiation-induced rectal bleeding in prostate cancer patients without serious adverse events. It proved useful in the management of rectal bleeding and merits further evaluation.

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