Abstract
In two patients who had undergone wide resection of the tongue for carcinoma of the oral cavity, the function of swallowing was examined by cinefluorography. Tongue base motion and the pharyngeal peristaltic wave were measured frame by frame. Movements of the tip and the end of the bolus, and closing of the nasopharynx were also investigated. In order to increase the cure rate for the advanced stage of carcinoma of the tongue and the mouth floor, wider resection of the primary lesion is indicated. The present study suggests that the function of swallowing can be preserved after wide resection of the tongue.