Radiotherapeutic Principles and Viewpoints

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Abstract
Squamous cell carcinoma is an important and common cancer of the oral cavity and the lower lip. Although variable degrees of differentiation do occur, the predominant histopathological finding is in the direction of a moderate to a well-differeniated tumor. On the lower lip, in the oral cavity (in which the common location is the oral portion of the tongue), the floor of the mouth, and the lower gingiva (mandible), the squamous cell carcinoma is a radioresponsive and radiocurable neoplasm. The therapeutic armamentarium currently available for attack on these lesions is diverse; it includes radiations uniquely advantageous for obtaining control of these tumors. They range from low-voltage x-ray suitable for superficial lip carcinomas, to orthovoltage radiation for advanced lip lesions and per oral techniques, to supervoltage radiation; the latter minimizes acute and chronic cutaneous radiation reactions and, significantly, relatively spares the bone tissues. In addition, low-intensity radium needles or radioactive substitutes

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