Dr Gustavo Sarria discusses the evolution of intraoperative radiotherapy in Peru, focusing on risk stratification for patients. The presentation highlights the effects of low voltage irradiation on tumours, pointing out lower acute toxicity and better cure results. Criteria for patient selection are outlined, with emphasis on tumour characteristics. Positive results include improved survival rates and local control with minimal side effects, along with a call for further research to improve treatment strategies in resource-limited areas.

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