“…The determination of radiotherapy is based on the histopathology of tumour nasal cells, the stage and extent of the spread, the patient's health condition, and the availability of facilities and infrastructure. [5][6][7] Currently, radiotherapy has been accepted as one of the most important types of therapy for this disease, in addition to surgery and chemotherapy. This method began to be used as one type of treatment of malignant tumours not long after the discovery of X-rays by W.C. Roentgenat the end of the nineteenth century.…”