A Radium Applicator for treating Carcinoma of the Nasopharynx

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Abstract
Most carcinomas in the nasopharynx are highly malignant tumors, which because of their location and activity are preferably treated by irradiation rather than by surgical means. In the treatment of lymphosarcoma and lymphoepithelioma, external radiation alone is usually the method of choice. Squamous-cell carcinoma, however, is more radioresistant, and experience has shown that intracavitary radium therapy combined with external roentgen radiation may offer a better prognosis than external radiation alone, particularly if the lesion is localized. On the other hand, very high energy radiation (radioactive cobalt or 2,000,000-volt x-rays) can be administered safely by external means alone, in doses equal to those attainable by combined intracavitary radium and moderate-voltage external roentgen therapy. If this high energy radiation is employed, there usually is no need for supplementary intracavitary radium therapy; however, since high energy equipment is not universally available, intracavitary radium therapy remains a valuable adjunct to the treatment of certain

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